window treatments > technical > glossary

  Glossary Item Definition Click on images to enlarge
Aluminum Blinds

Blinds that are comprised of aluminum slates from 0.4 to 0.9 gauge aluminum. The gauge tells you the durability of the slate, with 0.9 being the most durable and also the most expensive


A needlework technique in which pieces of fabric, embroidery, or other materials are sewn onto another piece of fabric to create designs, patterns or pictures


Similar to swags and cascade valances, but less formal in nature.


Window trim piece located below the sill

Arched Valance

A valance treatment that is arched along the lower edge

Austrian Shade

A fabric window treatment that pulls up like a Roman shade, but with soft, billowing folds

Avalon Valance

A valance that is comprised of structured returns and a fabric that represents tightly connected swags that are tightly pulled on the outer end and tapered on a diagonal in the middle with one swag overlapping the other.

Awning Casement Window

A casement window that is hinged at the top and opens from the bottom and upward

A/B Sheet

Orientation of how the electrical drapery track lies on the template.

Arc Length

Actual track width of a curved drapery


Not moving at precisely the same time.


Alternating current


Automated Controls Program; sunsensor, timer and wind sensor.

AC Motors

AC motros require 120VAC of electricity which is found in a typical outlet in a home or office. AC motors are either plugged into an outlet with a standard AC plug or require wiring by a licensed electrician.

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Balloon Shade

A window treatment with shirred or gathered fabric that pulls up into soft, billowy folds


To frame or border a piece of work with a contrasting or similar strip of contrast fabric to add interest to the finished work.

Banner / Handkerchief Valance

A series of fabric triangles attached to a mounting board or threaded on a rod


A molding covering the joint formed where the wall and the floor meet


A premium wood that comes from any of the various linden trees. It has a smooth finish and is used for making wood blinds and shutters

Bay Window

A square or polygonal window space projecting outward from the main walls of a building and forming a bay in a room


A line or cut across a fabric that is not at right angles to a side of the fabric

Bishop's Sleeve Curtains

Extra long straight panels of fabric which are cinched in the middle and poufed

Blackout / Blockout

Blocks up to 99% of outside light.

Blackout Lining

Lining that blocks up to 99% of outside light

Bleed Through

This happens when two fabrics are used in layers and the darker color of the bottom one "bleeds through" to the top one in the light and spoils the color and pattern of the top one.

Blind Stitch

A stitch that is frequently used for attaching applique pieces or binding. The stitches are sewn so they are hidden under the top layer of fabric.


A specific type of window covering which is made with slats of fabric, wood, plastic or metal that adjust by rotating from an open position to a closed position by allowing slats to overlap

Bottom Rail

The lower rail of the bottom sash of a double-hung window

Bow Window

A curved or arched window space projecting outward from the main walls of a building

Box Pleats

Deep, inverted, tailored pleats which are flat on the right side of the drapery to create a classical boxy look


Hardware that is mounted on the window frame or wall and used to attach and install the headrail of a window treatment.


A flat decorative trim that can be used to beautify window curtains

Brighton Shades

Balloon shades without the pleats, rings, and cords along the sides. allowing the sides to fall in relaxed tails.


To decorate fabric with raised woven patterns

Buckram / Crinoline

A coarse cotton fabric stiffened with glue

Bullion Drapery Trim

A very long and thick rope-type cording that is twisted and looped to attach to drapery for interesting trim features

Bump Interlining

A very heavy weight interlining made of cotton flannel that is usually placed between the fabric and lining for added insulation and thickness of the drape.

Butterfly Pleats

A pleat with two folds


Back panel of the roller shade to help block the light and or hide the roller from the rear view.


A stiffener or insert added to a panel of fabric to stabilize and help prevent twisting or cupping.

Blackout Fabric

Fabric that does not allow any light to filter through.


Drapery masters that "butt" into each other rather than overlapping one another.

Battery Powered Motors

Battery Powered motors use quality lithium batteries as a power source and are perfect for smaller window covering or installations that are not near an  outlet. Since they are batteries, there are no wires to conceal and no electrician is required.

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C.O.M. (Customer's Own Material)

When the customer purchases their own fabric and supplies it to the workroom or designer to create the finished product

Café Curtains

A curtain that covers only the bottom half of a window

Café Mount Shutters

Shutters that cover only the bottom portion of the window

Café Rod

A small, round decorative rod that is used to mount café curtains that have a rod pocket


A kind of rough cloth, often printed with a bright pattern


A bed hanging that is hung outside of bed curtains to prevent drafts

Cartridge Pleat

A fold of cloth sewn into place to create fullness in a drapery


Side treatments to valances and/or cornices with returns that fall in folds creating a zig-zag effect, left and right framing the window

Casement Window

Window that is attached to its frame by one or more hinges.


A hem with open ends used as a fabric pocket to encase a curtain rod or elastic for gathering

Casual Swags

Free-form folds of fabric that are gathered at the ends, cut straight on and assembled in a sweeping fashion on a pole or board that drapes into informal folds in a semicircle fashion

Cathedral Window

Usually seen in rooms with cathedral ceilings, the top of the window follows the slope of the ceiling.

Ceiling Mount

Brackets to attach the window treatment to are installed at the top of the window or ceiling

Cellular Shade / Honeycomb Shade

A window shade that consists of two or more sheets of accordion-pleated reinforced fabric which is bonded together. When viewed from the side they have a honeycomb construction which provides outstanding insulation


An extremely soft and bunchy fabric often used for decorative fabrics, embroidery, tassels, and rugs


A brightly printed and glazed cotton fabric


A metal or plastic hook placed at the side of the window to hold the cords of a shade or curtain.

Cloth Tapes

One to two inch wide, vertical strips of fabric that are used to hold a blind together

Combination Rods

Two or three drapery rods sharing one set of brackets

Continental Rod

Flat curtain rods that protrude from the wall to add depth and interest to rod pocket treatments

Continuous Cord Loop

A window treatment mechanism that uses a pulley system to rotate a clutch that raises or lowers a shade


The mechanisms used to raise, lower and tilt a window treatment, usually cords or wands

Cord Cleats

Small hooks on which you can hang excess cording to keep it out of the way

Cordless Treatment

A window treatment that can be controlled without the use of cords

Cornice / Pelmet

A decorative framework to conceal curtain fixtures at the top of a window casing

Cornice Board

The horizontal board used as support for a cornice or as foundation for swags and tails

Cornice Pole

A pole with rings that is often used for heavy curtains

Cottage Style Window Treatments

Placed over the top of café curtains with a valance and tied back on each side, exposing the upper part of the window to view outside


Fabric woven from cotton fibers

Crank Casement Window

A window that is hinged on one side and opens from the opposite side


Hanging cloth used as a blind

Curtain Drop

The length of a curtain from the hanging system to the bottom edge.

Custom Drapery

Draperies manufactured to a customer's specifications

Cut Drop

The cut length of the fabric or the drop plus hem allowances

Cut Length

The height of a cut band

Cut Width

The cut width of the fabric including any hem allowances


Piece used to close off a pocket to hide the roller from the room side when looking up

Cord Length

The straight lengh from end to end on a curved drapery.


Mechanical device that connects two tubes together to run as one system


When a fabric panel curls on outside edges.

Channel (Motorization)

Channels are used to organize motorized window coverings with their control counterpart(s). A channel is either associated with a single motorized window covering or a group of motroized window coverings.

Channel Button

Channel buttons are customizable buttons used for the DecoFlex WinFreeTM RTS Wall Switch. The switch can be configured to have anywhere from 1-5 channel buttons depending  on the project needs. Channel buttons can also be personalized with a specific name for easy organization. The fifth channel is accessed when all 4 LEDs illuminate. 

Channel Selector Button

This button allows you to easily navigate through channels on the Telis 5 RTS hand-held remote. Each time you press the button., the associated channel LED will illuminate.

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The Decibal (dB) is the standard measure of sound intensity. dBA is the A-weighted Decibel and is most often used for measuring environmental sound levels. It accounts for, or weights, the frequency components of sound from various environmental noise sources in relation with the normal response of the human ear at conversational levels. This measure is often used to regulate and prevent hearing damage.


A fabric of linen, cotton, silk or wool with a reversible pattern woven into it

Decorative Hardware

Hardware that can add aesthetic appeal to a window treatment as well as serve functional purposes

Divider Rail

Used to add both beauty and strength to shutter panels and to allow the separate sections of louvers operate independently of each other

Double Cell

A cellular shade that has 2 rows of pockets to trap heat and the cold air

Double Fullness

When the width of the fabric is double the width of the curtain rod

Double Hem

Where the fabric for the hem is folded over twice in equal amounts

Double Top Header

A heavier top drape using twice the hem fabric to double it in equal amounts

Double-Hung Window

A window having two sashes that slide up and down

Dowel Rod

A solid cylindrical rod, usually made of wood, plastic or metal

Drapery / Draperies / Drapes

Cloth draped gracefully in folds; a piece of cloth, hung vertically as a curtain

Drapery Accessories

Any decorative item that enhances or enriches the drapery treatment as an embellishment

Drapery Hardware

Hardware that serves a functional purpose in hanging a drape

Drapery Hold Backs

Decorative hardware accessories mounted to sides of a window to hold back drapery panels

Drapery Hooks

Hardware used to keep stationary scarves and swags in place

Drapery Rings

Hardware used to allow the drapes to move freely on the pole

Drapery Rods

A rod used to hang a drape


That which drapes; Material used as a drape

Draw Draperies

Panels of fabric that will open and close, usually on a traverse rod

Drop Length

The distance from the top of the object to where you want the fabric to end.

Dye Lot

Color variation between different manufacturing runs of fabric


When a tube has a slight bow because of large width (causes fabric to have a ripple).


Direct Current.


Double Pole Double Throw; to operate two systems simultaneously.

DC Motors

DC Motors require a transformer to covner the 120VAC form a standard outlet to 12VDC or 24VDC to power the motor. The transformer plugs easily into the wall and does not require a lciensed electrician.

Dry Contact

A dry contact is a mechanical connection between two points, typically made by the closing of the output on a relay, although transistors can act as dry contact as well. "Dry" refers to the fact that no current or voltage is being switched between the relay output. Ex. Somfy motor controllers have dry contact inputs which are used to tell the motor controller to send the motor up or down.

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Edge Binding / Banding

Any strip of material that is applied to the edge of a panel to seal or finish the edge

Energy Efficient Window Treatments

Window treatments that save energy by preventing heat loss or gain

Envelope Shades

Casual curtains attached to a mounting board and hung as a pair of flat panels with the bottom inside corners pulled out and hooked onto the wall

Extension / Projection Brackets

Used when additional space is needed between the blind and the mounting surface

Exterior Hembar

A visible aluminum bar, usually painted white, used for weight or decorative reasons.

End Limits

Limits represent the location where the motorized window covering starts and stops. There is an upper limit which is where the window covering stops when the up button is pressed and a lower limit which is where the window covering stops when the down button is pressed. Both the upper and lower limits are programmed and depend on the user\'s preference.

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Fabric Panel

The result of all fabric widths sewn together to make curtain window treatments

Face Fabric

The color or pattern of the fabric that faces the room as opposed to the side that has lining applied to it


The strip of fabric that is sewn to the raw edge of a fabric and folded back to the wrong side

Fan Curtains

Similar to the fan shade, but used on half circle windows with the fan facing up

Fan Folded

The vertical fold of accordion action of the fabric that creates folds and helps hold the drapery to the form intended for pinch pleats

Fan Shades

Arcs of fabric that are pulled together in the center by rings and cords and then fastened to the back of the shades with the arc, or fan, facing down


A vertical board that obscures the heading of the curtain

Feng Shui

Rules in Chinese philosophy that govern spatial arrangement and orientation in relation to patterns of yin and yang and the flow of energy


A decorative end piece on a rod


A product that is applied to fabric as a protection against water marks and fading

Finished Drop Line

The place where the curtain stops

Finished Length

The exact vertical measurement for draperies or curtains

Flame Retardant Fabrics

Fabric that has been treated so it will not catch on fire

Flame Retardant Fibers

Naturally flame retardant fibers


A flat soft fabric that is made from fine wool and can be very colorful and have fabulous designs

Flat Fell Seam

A seam that gives extra strength to a seam

Flat Roman Shade

A tailored fabric shade that hangs flat at the window. As the shade is raised, soft pleats form at the bottom

Flush Mount (Product Depth)

Depth required to mount a window treatment in such a way that it is completely recessed inside the window frame and no portion of it sticks out from the frame of the window

Forging Iron

To force shape iron and other metals with high heat and hammer into shapes

French Door

A door, usually one of a pair, with glass panes that extend for most of its length

French Seam

A self enclosed seam stitched from the right side, then from the wrong side


The width of the window times the cuts of fabric width to give the finished product fullness

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Bringing fabric into a tighter position to add fullness

Gathered Curtains

Curtains that are precisely gathered and pulled back with a tie to create a gently arched line of fabric against the window

Gathering Tape

A heading tape that creates a ruffling effect


A medium-weight balanced plain-woven fabric made from dyed cotton or cotton-blend yarn

Goblet Pleats

Pleats that have a curved top edge that is pushed out in a goblet-type shape


The direction of threads in a fabric


Metal, plastic, or rubber rings that are inserted into a hole made through a material that is used to reinforce the hole or to shield something from the sharp edges of the hole


A plastic sleeve that provides a solid backing for fabric veins. Used for fabric verticals.

Group Control

Electrical device that allows multiple motors to function at the same time.

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The top of a drapery


How the top of a drapery is finished


The hardware at the top of a window treatment that contains the operating mechanism

Height / Length

The vertical measurement of a window treatment


Turning under and stitching a raw edge

Hobbled Roman Shade

A Roman shade that has permanent soft folds. When shade is fully extended or drawn, these folds layer


Metal rods with decorative medallions that are used to hold back draperies

Hold-Down Brackets

Small brackets that are attached to the bottom rail of a Venetian blind in order to fix it to a window sill or the bottom of a door. This prevents the bottom of the blind from moving.

Hopper Windows

Windows that are hinged at the bottom and open inward from the top


When using an existing pocket, the hanger connects on the front side so the closure has an attachment point.


Used when splicing two fabric panels together and when enclosing the hembar at the bottom of the fabric.
(Also called seaming)

Height (Motorized Systems)

The longest point that dissects the arc length and cord length of a curved drapery. (Can also be the measurement from the top of the bracket to the bottom of the system)


A bar that is normally inside of a sealed pocket at the bottom of the fabric panel.

Home Automation

The process of integrating many electronic components into a common network for control in a home.


A continuous uninterrupted wire run from the motor back to its control

Honeycomb Pleat Size

Available in 3/8" 3/4" and 1 1/4" size pleat

Honeycomb Light Control

Honeycomb shades are available in Sheer fabrics, translucent fabrics and blackout fabrics.

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A small panel used between a pair of swags or jabots


A fabric that is held between the face fabric and the lining to improve insulation


Inside bracket, referring to the way the window covering is going to be mounted.

Idler or Non-Drive

End-opposite end of the motor.

Infrared Frequency

A remote control medium that utilizes the infrared light spectrum (similar to TV controls). It requires a line of sight between the motor receiver and the control sendign the signal, which requres the use to aim.

Isolated Relay

Electro/mechanical device that allows the flow of electricity in only one direction.
Maintained - Once pushed, locks in place.
Momentary - Once pushed, must be held

Individual Control

Individual Control is when multiple motorized window covering need to receive separate signals in order to raise or lower individually. available with Radio Technology Somfy® products such as handheld remotes, timers and wireless wall switches as well as with infrared controls.

Intermediate Position

This feature allows users to save a preferred position for their motorized window coverings. This memory feature provides quick access without having to fine tune the position of any given shade each time. Save it once and it\'s always available. The intermediate position is accessed with the MY button on the Telis handheld remotes.

In-Wall Wired

This is an available power option for most Somfy motors in which the motor is wired directly to the
home or building\'s electrical system. This option requires a licensed electrician and offers
maintenance-free operation.

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A small panel usually hung from the top of the window that is folded into deep pleats at the top and cut at an angle at the bottom


The vertical components that form the sides of a window frame


A raised design or pattern woven into a fabric

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Kick Pleated Valances

Similar to box pleats, but the pleats are spaced further apart


A method for fastening or securing linear material by tying or interweaving

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Ladder Cord

The cording supporting individual slats at proper spacing on horizontal blinds


A cornice that completely frames the window


A narrow thin strip of wood used as backing for plaster usually attached to the wall, ceiling, or window frame

Leading Edge

The point where curtain panels overlap in the center of a two-way traverse rod.


The control, typically a cord, which raises and lowers blinds or shades

Light Control

A window treatment's ability to let different levels of light into a room

Light Filtering

The amount of light a fabric will filter


Layer of fabric placed on the back of curtains to protect them from light and dust.

Long Point

Measurements of length on curved, tiered, or uneven window treatments to determine a long measurement

Loose Drape

A curtain loosely gathered back with a tie


A slanted opening for ventilation

Limit Switch

Adjustable stops in an electric motor

Lithium Batteries

All Somfy WireFreerM motors are designed for use with lithium batteries. Lithium batteries offer a
greater heat tolerance, which is especially important in window applications. Additionally, Somfy\'s
patented battery technology allows the motors to save energy when they are not being used; this
technology is based on the use of lithium batteries.

Lower Limit

This is where the window covering stops when the down button is pressed.

Luminette Openness Factor

Available in standard translucent sheer or room darkening.

London Shades Light Control

London Shades are available in sheer fabric, with translucent lining and blackout lining.

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Max Square Feet

The maximum area (width times height) the blind or shade is allowed to be. Expressed in feet.

Minimum Mounting Depth

Depth needed to mount a window treatment inside the window frame


To create a diagonal seam at a corner to make a right angle


Silk fabric with a wavy surface pattern

Monochromatic Color Tones

Several tones of same color base mixed with patterns & textures for added beauty


To fit blinds or shades with a motor to open and close them


To attach a window treatment to a support

Mounting Board

A wooden board installed inside or outside of a window frame to which certain types of window treatments are attached


Wood trim that sets off smaller panes of glass in a window

Motorized Systems - 2 on 1

Two shades or blinds on one motorized headrail.

Motorized Systems - 3 on 1

Three shades or blinds on  one motorized headrail.

Motor or Drive-End

Opposite end of the idler end of the motor.


Module offered as an add-on component for AC systems allowing for plug-and-play power and RF control of the system.

Maintained Switch

Operates the motorized window covering with a brief press of the button, which sends the shade to its
programmed end limit

Manual Override

This feature allows motorized draperies to be operated even if there is no available power.

Momentary Switch

This type of switch requires the user to press and hold the switch until with motorized window covering
reaches the desired location.

MY Button

This button acts as a stop button when the motorized window covering is in motion but sends the
shade to the programmed intermediate position when the shade is already stopped.

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A fabric with a texture or design that runs in a single direction

Natural Shades / Natural Woven Shades

Shades made from natural and sustainable materials like bamboo, reeds or grasses

Non Directional Fabric

Fabric that can be rotated at 90-degree intervals and the fabric prints will still be right-side up

Non-Operative Drapery Panels

Stationary drape panels that can be attached to one large pole across the window, short individual rods, or attached to wood and fixed to the wall with L-Brackets.

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Odor Eliminating Fabrics

Special fabrics made of non-absorbent materials like metal, glass or stone that do not absorb odors


Not transmitting or reflecting light or radiant energy

Outside Mount

Designed to fit outside a window casing

Over The Pole Open Swag

Swags that are open at the top to see through to the wall or window


The part of a drapery panel which rides the master carrier of a traverse rod and overlaps in the center when draperies are drawn closed


Outside bracket, referring to the way the window covering is going to be mounted.

Opaque Fabric

Fabric that allows no light to filter through. No discernible view throughout the fabric.

Openness Factor

Percentage of openness fabric dependent on how tight the weave of the fabric is. Determines the amount of light flltered through the fabric.

Overlap Arm

Drapery master arms that overlap.

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Palladian Window

A three-part window where the center window is arched and wider than the two straight side windows


A generic term used to describe any four-sided window hanging


Fancy decorative trimmings such as tassels, tiebacks and ribbons

Pattern Match

Random pattern repeats are matched vertically at the selvage edge so that the pattern lines up horizontally at the leading edge of the fabric

Pattern Repeat

The interval between the repetition of the same pattern

Pencil Pleats

Pleats created using a special tape sewn to the heading of a valance or curtain that creates a narrow row of folds resembling a row of pencils laid side by side when the tape is drawn up

Picture Window

A large window with fixed panes

Pinch Pleats

A drapery heading on which the basic pleat is divided into two or three smaller, equal pleats and sewn together at the bottom edge on the right side of the fabric


A type of trim or embellishment consisting of a tube of ornamental fabric around the edge of a garment or textile work


A fold formed by doubling fabric back upon itself and then pressing or stitching into shape

Pleated Shade

An accordion-pleated fabric shade that rises and lowers on a pull cord

Pleater Tape

A ready-made strip sewn to the top of curtain window treatments and attached to the hanging system.


A finely ribbed fabric made from silk, wool, cotton or synthetics

Pre-Made Take-Home Draperies

Ready-made drapery that is only available in a few sizes ready to hang and with no customization


How much of a view is blocked when a window treatment is fully closed


The distance off the wall, coming into a room


Excess fabric at the bottom of a drape or panel that lays on the floor around the base of the window treatment

Puddled Curtains

Curtains made longer the needed so they lie on the floor

Pike Insert

Felt strip used in the side and sill channels to block light.


An aluminum box that is used instead of a pocket built up into the ceiling.

Parallel Wiring

Wires connected from motor to motor without a mechanical separation (may void warranty).


Wire lead provided from motor to j-box or control. (Standard pigtail is 7\')


A power option that requires the motorized window covering to be plugged into a standard electrical

Pleated Curtains Stack

Pleated curtains can stack to the left, the right or split stack.

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Railroad Fabric

Bolts of fabric used "side to side" or used as the width of the bolt that becomes the length of the treatment


Using fabrics horizontally rather than vertically

Ramin Wood

A dense, imported hardwood used in many value-priced wood blinds

Raw Materials

A material that is acted upon or used by human labor or industry, for use as a building material to create some product or structure.

Recessed Window

A window set back into a wall

Relax Factor

An allowance taken to compensate for the gap that is created when a window treatment that has rings, pleats, or tabs causes a fabric to narrow from the finished width

Remote Control

A device that can be used to control the opening and closing of electrical window treatments from a distance


One complete pattern of a fabric measured vertically and/or horizontally


The measurement from the front of the curtain rod to the wall

Reverse Roll

An option for roller shades that makes the fabric roll off the front of the headrail instead of the back

Right Side

The finished side of fabric

Rod Pocket / Slot Heading Curtains

A popular type of curtain that consists of stitched pocket at the top of the curtain that is gathered or shirred onto a curtain rod

Rolled Curtain

Curtains that roll up into neat bunches of fabric at the top of the window via hooks, loops or ties

Roll-Up / Roller Shade

A shade operated by a device with a spring. The shade coils itself around the device's cylinder when the spring is let loose

Roman Shade

A tailored, fabric window shade that hangs as a flat panel and is raised by cords to fold accordion-style

Room Darkening

Decreases the amount of light passing through a window treatment to darken a room


A round, stylized flower design

Routeless Blinds

Blinds that have small notches in the back of each slat instead of route holes for increased privacy

RTB (Rod Top and Bottom)

Indicates a pocket at the top and bottom of the fabric where a rod slides through and fabric is gathered on the rod then stretched between the two rods and attached to the door frame


A narrow pleated strip of decorative fabric


Half of the diameter of a circle.


Railroading occurs when a shade requires a fabric panel that is wider than the maximum length of the selected fabric. This process involves turning the fabric panel on its side when attaching it to the tube


Ratio is used to refer to the width to height proportion of the roller shade


A pelating method by Graber (also known as Ripplefold by Kirsch). The ripple-like folds of the fabric are created by special track hardware that uses carriers snapping to the top back of the drapery to create this heading style.

Radio Frequency (RF) Control

A remote control medium that utilizes radio waves (similar to garage door remotes)


Recommended standard 232; a wiring format for the transmission of data.

RQ (Remote Query)

Allows bi-directional RF communication between motor and third-party systems

Radio Technology Somfy

Radio Technology Somfy@ (RTS) is one protocol that Somfy motors use to communicate with their
control counterparts. RTS sets the industry standard in terms of control choice and breadth of range
and is available with handheld remotes, wireless wall switches and timers.


The expression of how much an insulating material resists heat passage through it (a measure of the energy conserving capacity of a material). The better insulator a material, the higher its R-value.

Roll Style

Roller shades may be installed with a standard roll orientation or reverse roll.

Roman Shade Styles

Pleats of Roman Shades are available in many styles such as Flat Roman, Roman with Seams, Roman with Bars and more.

Roman Shade Pleat Size

Available pleat size for roman shades are 4" and 6"

Roman Shade Valance

Valance for Roman Shade is available in 2" or 4" face size, an s sometimes without.

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Satellite Eye

A tiny sensor that detects the remote control for motorized window treatments


A heavy, smooth fabric with a high sheen on one side


A series of curves forming an ornamental edge on a loose valance


A long piece of fabric, usually designed to drape across the top of a window and hang to the floor on either side


A wall-mounted fixture fabric can be draped through


The join where two pieces of fabrics are sewn together

Seam Allowance

An extra amount of fabric used when joining fabric

Self Lined

When the front fabric of a window treatment is also used as the back lining


A piece of fabric stitched to the top of curtains to make it appear to be separate

Self-Styling Tape

A stiff tape with woven-in cords used to create pleated and shirred curtains


The edge of a fabric that is woven so that it will not ravel or fray


Transmits filtered light with no view through the covering


Semi-transparent, flimsy cloth

Shirred Curtains

Curtains stretched tightly and gathered on rods at the top and the bottom

Shirring Tape

Used to make tops of window treatments uniform and consistent in the distance between each pleat

Short Point

Measurements of length on curved, tiered, or uneven window treatments to determine a short measurement


A hinged blind for a window


A fabric made from the fine threads produced by certain insect larvae


Horizontal strips make up a Venetian blind

Smocked Heading

A heading that resembles a hand-worked smocked pattern

Spacer Blocks

Short 2x4 or 2x6 blocks nailed to corner studs to mount a blind

Specialty Options

Extra features for a window treatment that offer an alternative to standard lifting controls, add extra light control, or alter the decorative appearance

Spring-Tension Rod

Adjustable drapery rods housing a spring to compress tightly into a window frame or opening


The area in which the slats or vanes of a blind "stack" when it is opened

Stackback / Stacking Space

The amount of space the curtain takes up when it is open

Stagecoach Valance

A panel of fabric mounted on a board, and attached to the inside frame of a narrow window

Stationary Side Panels

An immobile, or stationary drapery treatment of panels on either or both sides of a window to frame it and decorate it

Straight Grain

The lengthwise threads of a fabric, running parallel to the selvages


A fabric treatment that is usually arched, semi-circle, or circled with the fabric shirred around the outside of a wood frame to form the shape and then gathered in the center like a fan


A pole or track that holds a curtain or shade

Swag / Festoon

Curtain window treatments that can be hung on a rod or attached to a mounting board

Swag Panel Drapery

A free-form single panel that consists of a single width of fabric per side that is self-lined and flat for draping

Swag Set

A two piece swag

Swing Arm

A type of drapery rod specifically used for French doors and inward swinging windows

Swivel Bracket

Fixing brackets used to fit Venetian blinds and roman blinds

Side Channels

Rails used to help block out light along the sides of the fabric panels.

Sill Channel/Angle

Rail used to help block light at the bottom of the shade.

Solar Fabric

Provides protection against sunlight and allows see-through light filtering  depending on the openness factor.


Increase or decrease of fabric size over time due to its elasticity.


Metal bar that is used to join two pieces of drapery track together to form one larger drapery track.


Moving at precisely the same time.


Single Pulse Double Throw; to operate one system.


Allows for incorporation of multiple control peripherals into a single system.


Three position wall cotnrol to operate system. Availabel for control of one or two systems, switches are a more traditional method of operation.

Silhouette Vein Size

Available in 2" 3" and 4" Veins

Silhouette Openness Factor

Silhouette is available with sheer fabrics, room darkening fabrics "bon soir" and blackout with headrail that includes a roller shade at the back.

Shutters Panel Style

Shutters are available in standrd hinged panels, by-fold panels and bypass panels

Shutters louver size

Shutters are available in 2 1/2", 3 1/2" and 4 1/2" louver size

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Tab Top Curtains

A curtain with flat fabric loops at the top


A crisp, smooth woven fabric made from silk or synthetic fibers


The fabric that hangs from the end of a swag


A heavy textile with a woven design that is used for curtains and upholstery

Tension Rod

A curtain rod which stays in place inside the window frame through spring tension

Thermal Lining

A material woven to trap air and insulate against cold


A device for holding or drawing drapes and curtains back

Tiered Curtains

Curtains that consist of four short panels that are each about 1/2 the length of the height of the window with one pair hung at the top of the window and the other halfway down.

Tie-Tab Curtains

Similar to tab-top curtains, but instead of instead of sewing the ribbons or fabric bands in place, they are tied over the rod.


To open and close louvers on a blind via the tilter mechanism


A plain-woven cotton fabric printed with a repeat pattern

Top Down

A shade option that opens from the top down instead from the bottom up

Top Down / Bottom Up

A shade option that can open from the top down and from the bottom up

Top Treatment / Window Toppers

Treatments installed at the top of a window like valances and cornices

Traverse Rod

Adjustable drapery rods that open and close the window treatment by pulling a cord


A decoration or adornment on a window treatment

Triple Cell

A cellular shade that has 3 rows of pockets to trap heat and the cold air

Triple Fullness

A fabric panel that is three times the width of the window

Tandem Motor Set

A drive and non-drive motor that function as one, more powerful, motor system.


Lateral movement of a panel as it rolls up or down.


A fabric panel turning either to the left or right (generally occurs with long, narrow shades).


A device used to transfer electrical energy from one circuit to another. ln motorization, transformers
are used to lower the 110 VAC current from a standard electrical outlet to either 12VDC or 24 VDC
depending of the type of motor being used. Common uses of a transformer include a laptop or cell
phone charger.

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Universal Control Module

Upper Limit

This is where the window covering stops when the up button is pressed.

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A drapery top treatment made of fabric or wood and designed to conceal hardware and fixtures while also providing a decorative touch

Valance Returns

The two side pieces of an outside mount valance that extend from the front valance back to the wall or window frame.


Hook and loop tape used for attaching fabric to a mounting board


A silky densely piled fabric with a plain back

Venetian Blinds

Blinds constructed of horizontal strips of wood, aluminum or PVC

Vertical Blinds

A series of thin slats that hang in front of a window, which can be turned as a group close with a slight overlap to block the window


A light semitransparent fabric

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Wall Mount

Mounts that are used when installing a window blind or shade onto the wall

Warp and Weft

The direction threads run in a fabric. Warp runs the length, weft runs across the width.


Small metal discs placed in the hem of curtains to make them hang better.


The distance between the selvages of all fabrics


A fabric made from the hair of sheep

Wrong Side

The back of the fabric that is less finished and may have stray threads or a more rough look to it


The panel moves laterally from the one side to the other.


Male/female quick disconnect motro plug.

Wired Technology

A control technology that has a switch wired directly to the motor; this option requires a licensed

Wood Blinds Slat Size

Wood Blinds slats available in 1" 2" and 2 5/8"

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Allows RF communication with other Z-Wave products on the market.

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