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.

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.

Laboratory measurement of airborne-sound transmission loss of building partitions.

Standard test method for measurement of airborne sound insulation in buildings.

Determination of Sound Transmission Class rating, STC.

Architectural application and installation of operable partitions.

A synthetic material weathering strip attached to underside of bottom bar.