what stc ratings are available

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Steelcraft have tested different types of doors and frame assemblies using Zero International gasket seals for the various STC ratings. Tests are in accordance to ASTM...
Frames can be installed either KD (knock down) or welded to receive the STC rating.
Steelcraft borrowed light frames are not listed/tested. Check with the glass manufacture if they are listed and with what type of framing used.
Sound seals are required. Zero International Gasket Notes: Perimeter Seals – Zero #475 applies to the stop of the head and jambs. Door bottom – Zero #367, surface applied. Threshold ...
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 and...
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...
 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...
On fire rated transom and/or sidelight frames and fire rated window frames, Steelcraft labeling procedures only control the O/A width and/or height of the frames based on wall condition. The amount...
Yes, Steelcraft doors and/or frames are available and can carry a UL, WH or FM label. The type of fire label (UL, WH or FM) is dictated by the specifications and local building code. Doors ...
The Von Duprin Guard-X exit device is not fire rated because the deadbolt is not spring loaded. Therefore, there would be no positive latching as required on a fire rated opening. 
ASTM E-119 is a test standard for walls, partitions and floor or roof systems: This test standard is also used for ceramic type glasses when used as window wall and/or borrowed light frames. ...
High Definition (High Def) door panel designs have deeper shadow lines than conventional CE-Series designs. CE-Series doors are available with optional High Definition (HD2 and HD2A) door panel de...
A UL 20 minute fire rating is the maximum fire rating for a Full Glass (FG) door design. A14-Series door construction: Max fire rating is 20 minute. UL label only FG must use Over-Lapping Stee...