Stc 37 door Our STC rated acoustic doors meet performance test ratings (lab and field) to assure that the sound control meets your acoustic goals. STC ratings are calculated by a weighted average of Transmission Loss (TL: a door’s ability to reduce noise) values taken over 16 frequencies, which are fitted to a curve in a method defined by the ASTM E413 Classification Standard for Rating Sound Insulation. 16 or 14 gauge, standard hollow metal frame 8. Its minimal extrusions allow contractors to install the system with complete ease. Panel options and glass kits available. When it comes to soundproofing, you are usually defined by your weakest point. Lite opening Tested with 1/4 in (6 mm) safety or tempered glass. Quantity Quick Ship Orders - Contact Factory. Two common acoustical rating systems are: Sound Transmission Class Rating (STC) – applicable to interior building partitions and viewing windows where the sound source is human speech and/or office equipment. 2 lb/ft2. ivhhd wufr cxmxbho txwsot zrdxe trfu qmuyqihi uvvdsh ctvth dlil