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Window Shade Glossary

  • Ball Stops
  • Upper and lower stopping limits for bead chain clutch shades.
  • Bead Chain

  • Operating chain for clutch-operated roller shades.

  • Bead Chain Connector
  • Metal piece to connect ball chain.
  • Bracket
  • Mounting point for shade. Use the term "bracket" when ordering shade without fascia or headbox.
  • Bracket Cover
  • Decorative cover for brackets.
  • Ceiling/Wall Headbox
  • Consists of decorative front fascia panel and top back cover. Shade is accessible by removing front fascia.
  • Chain Tension Device
  • Safety device to keep chain taut. Available in new Spring loaded version as upgrade or replacement.
  • Coupler
  • Allows one motor or crank to operate multiple shade fabric bands.
  • Endcap with Fascia or Headbox
  • Endcaps provide mounting point for shade, and attachment point for fascia/headbox. No brackets are needed when endcaps are used.
  • Endcap Cover
  • Decorative cover for endcap.
  • Fascia
  • Decorative aluminum shade cover. Available in small square, small radius or large square styles.
  • Multi-banded
  • Two to four bands or shades operating on a single motor or crank.
  • Pocket Style Headbox
  • Four sided cover intended for recessed installation. Shade is accessible from the bottom.
  • Railroad/Transverse
  • Width of window is greater than width of fabric. Pieces of fabric are rotated, seamed horizontally and trimmed to the correct width. In some cases several pieces may be seamed together to cover unusually tall windows. Not all fabrics are suitable for seaming.
  • Reverse Roll
  • Fabric is rolled off front of roller, away from window.
  • Seams
  • Two pieces of fabric joined together to make larger piece. All Draper seams are heat sealed.
  • Single-banded
  • One band or shade operating on a single motor.
  • Slat bar
  • Bottom shade weight which is enclosed in a neat sealed hem.
  • Spline Attachment
  • A method of attaching shade fabric to a roller. Fabric is welded to a plastic spline then inserted securely into a matching channel in the roller. May affect which shade sizes use small/large fascia or headbox.
  • Spring Assist
  • Specialized roller which reduces resistance when raising a manual shade.
  • Spring-Loaded Chain Tension Device
  • Inhibits operation until mounted and locking mechanism is depressed.
  • Stay
  • Metal strip to minimize fabric curling or for fabric retention in side channels.
  • Standard Roll
  • Fabric is rolled off back of roller, close to window.
  • ”U” Channel
  • 2-1/2” x 1” side channel for fabric.
  • R-Value

  • R-Value indicates the effectiveness of the window covering at preventing energy from flowing to the outside. The higher the R-Value, the greater the insulating effectiveness.

  • Solar Heat Gain Coefficient (SHGC)
  • SHGC measures how well window covering blocks heat from the sun from flowing to the interior. SHGC is expressed as a number between 0 and 1. The lower the SHGC, the better a product is at blocking unwanted heat gain.
  • Solar Transmittance (Ts)

  • The percentage of solar radiation that passes through the fabric.

  • Solar Reflectance (Rs)

  • The percentage of solar radiation reflected back out of the fabric.

  • Solar Absorbance (As)

  • The percentage of solar radiation absorbed by the fabric.

Glossary

 

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