SupportGlossary of Terms

Closure or grille curtain folded tightly forms a stack. Often an area in the wall will be for storage. That space is called a pocket.

The distance from the center of the guide to the closest edge of the bracket plate.

Catch-type obstructions mounted at the top of the guides to prevent the bottom bar from leaving the guides when the curtain is fully raised.

3″ x 3″ 20′ structural tubular steel, factory drilled and tapped for guides and bracket plates. This self-supporting system allows rolling grilles/closures to mount directly to a concrete slab and ceiling joists.

See “Retractable Reel”.

A curtain of slats that move within a cabinet that can be locked. An example of this would be a roll top desk.

Located opposite the drive shaft on the barrel assembly. Attached to spring counterbalance assembly and charging wheel to add tension to spring.

See “Charging Wheel”.

Thumb turns are required by fire laws in many areas. This non-removable key-like knob fixed to a cylinder is used as an alternative to a keyed cylinder. Requires a protective cup and security pattern on grilles to prevent unauthorized entry.

A lead or end post can be a top & bottom locking post. A spring-loaded drop bolt engages a floor socket and a top lift bolt protrudes into track and header.

A Mini Roll-Up term. Refers to the top of the hood that covers the axle and end caps.

A helical wound spring mounted inside the barrel used to counterbalance rolling grilles/closures.

Extruded aluminum 1 3/8″ (35mm) wide by 1 5/8″ (14mm) high. Track is joined together with hardened steel track pins (like model railroad tracks) and alignment bars constructing a smooth continuous surface for the trolleys to carry the curtain.

Last post of the curtain that travels to the front of the pocket when curtain is extended across opening. The post’s top stop self locks into a header stopper and a floor “V” stop inside of pocket. A full height (maximum 10′ (3000mm)) Protection Plate is attached to back of the traveling end post.

Dual 1 1/8″ (28mm) nylon wheels spaced to ride in track. The trolleys support the full weight of the curtain. Also referred to as Rollers.

Used in pockets only. This “V” shaped piece of steel is spread the width of the pocket and secured to floor. Placement in the pocket is located by fully assembled curtain being stretched into pocket. The traveling end post has a stopper that adjusts down so that only the back post will engage into the 3/4″ high “V” Stop. Counter “V” stop is 1/2″ high.

A full height extruded piece of aluminum that the lead post fits and locks into. This channel is secured permanently to the wall.

See “Charging Wheel”.

See “Mullion”.

Face of wall guide mounted on an angle that faces away from the opening, usually used on masonry or wood jambs.