SupportGlossary of Terms

B

Barrel Assembly

Steel barrel with a drive shaft at one end and a tension shaft on the other. The counterbalance spring assembly is inside the barrel. Rings may be attached to the barrel. Deflection of the barrel may not exceed .03 per foot.

Barrel Rings

Used to raise offset from counterbalance barrel where the top slats of a curtain are attached.

Base Plates

Optional steel plates mounted under the support tubes to help distribute weight of the grille/closure on the floor.

Base Slat

A Mini Roll-Up term. Refers to the bottom bar of the shutter. A base slat contains the locking just as a bottom bar for a grille or closure does. A vinyl astragal on the bottom of the base slat prevents marring of counter tops.

Bell Mouth

Flared upper portion of guides to allow easy entry of the grille/closure curtain.

Between Jamb Mounted

Guides are mounted to wall directly facing into opening and are often in a pack-out configuration. This mounting could require inside charging wheel and fascia.

Bipart

A curtain that stacks on both sides of an opening and joins together the same as a lead post into a wall channel with an added Lock Rod to prevent sway. Lock Rod engages into floor socket.

Bottom Bar

A heavy-duty aluminum extrusion attached to the bottom of the curtain. Locking is located in the center of the bottom bar. An optional bottom bar plate and/or astragal is often included on the bottom bar. ADA requirements locate locking a minimum of 9-inches off the floor.

Bottom Bar Plate

Mounted to underside of bottom bar for reinforcement and conceals slot in ceiling.

Bracket Plates

Mounted to the support tube or the angle of the guide assembly. Bracket plates support the barrel assembly on the shafts at each end. These plates also support a motor mounting bracket and hood if required. Size of plates determined by height that forms the coil size.