,Sound Transmission Class (STC)##other##,STCValue##other##,Frame Thickness##length##inches,Model##other##,Description##other## "STC 33 - 5 7/8""",33,33,5.875,Accoustic Steel,Ambico Limited Acoustic Steel Door & Frame "STC 33 - 7 1/8""",33,33,7.125,Accoustic Steel,Ambico Limited Acoustic Steel Door & Frame "STC 40 - 5 7/8""",40,40,5.875,Accoustic Steel,Ambico Limited Acoustic Steel Door & Frame "STC 40 - 7 1/8""",40,40,7.125,Accoustic Steel,Ambico Limited Acoustic Steel Door & Frame "STC 49 - 5 7/8""",49,49,5.875,Accoustic Steel,Ambico Limited Acoustic Steel Door & Frame "STC 49 - 7 1/8""",49,49,7.125,Accoustic Steel,Ambico Limited Acoustic Steel Door & Frame "STC 53 - 5 7/8""",53,53,5.875,Accoustic Steel,Ambico Limited Acoustic Steel Door & Frame "STC 53 - 7 1/8""",53,53,7.125,Accoustic Steel,Ambico Limited Acoustic Steel Door & Frame "STC 54 - 5 7/8""",54,54,5.875,Accoustic Steel,Ambico Limited Acoustic Steel Door & Frame "STC 54 - 7 1/8""",54,54,7.125,Accoustic Steel,Ambico Limited Acoustic Steel Door & Frame