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What is an STC rating?
Resolution:
STC stands for Sound Transmission Class. An STC (Sound Transmission Class) is a single number rating system derived from measured values of sound transmission loss in accordance with ASTM E90...:
What Steelcraft products have been tested in accordance with SDI's Acoustical Testing Standard #SDI 114?
Resolution:
SDI 114 is no longer published as an SDI performance standard. The new SDI standard for acoustical Performance is SDI 128-09Steelcraft does offer products that have been tested in accordance with S...:
What is a communicating frame?
Resolution:
Communicating Frames are hollow metal frame fabricated such that a door is installed in each rabbet of a double rabbeted frame (2 doors total) to facilitate dual access and control of the opening, ...:
What is a Cam Lift Hinge?
Resolution:
Cam Lift Hinges are specially designed hinges used mainly on acoustical door assemblies. The Cam Lift Hinge lifts the door during its travel and seats the door bottom for a pos...: