steelcraft STC L series

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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...
 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...
SDI 114 is no longer published as an SDI performance standard. The new SDI standard for acoustical Performance is SDI 128-09 Steelcraft does offer products that have been tested in accordance wit...
All doors are tested in accordance with ASTM C1363 and SDI 113:B18 Series (Steel Stiffeners)     U-Factor = 0.50     R-Value = 2.01B16 Series (Steel Sti...
Sound Transmission Class; STC