Treatment applied to galvanized steel to insure paint adherence. Generally consists of phosphoric acid and water bath.

A handle supplied when required on manual push-up doors to assist in raising and lowering the curtain.

An accordion grille product that requires little headroom and no floor track. The grille is able to follow a curved line and stacks into a side pocket(s) in the wall. Also called side-sliding grilles, [..]

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A diaphragm device mounted to either the bottom bar or the wall, used with a pneumatic sensing edge to signal a motor operator when the door has encountered an obstruction.

A hard, non-corrosive oxide film on the surface of aluminum doors, grilles or shutters created by electrolytic action. The electrochemical process produces an anodic coating by conversion of aluminum [..]

A phrase used on plans and specifications to indicate that a substitution can be made to a specified brand name or specified manufacturer.

American Society for Testing Material. A source for establishing standards to which most door manufacturers adhere to when designing and manufacturing door components.

Standard test method for sound absorption and sound absorption coefficients by the reverberation room method.

Surface burning characteristics of building materials.