Acoustic fire doors, made of steel that combines fire resistance with acoustic performance, available in one leaf with three classifications: EI2 60 and 90 with 36dB and EI2120 with 39 dB, tested under UNE-EN ISO 140-3:1995 and UNE-EN...
Acoustic doors with porthole should be tested separately because Porthole is an element that alters substantially the soundprooffing of the door. The isolation and used materials are specially relevant for the porthole. Sound might leak through any...
