On many occasions the doors should be Firewall by application of the regulations and also to have good attenuation Acoustics, such as in the case of cinemas, theaters, conference rooms and exhibitions. Alpaco offers approved doors that meet the two requirements at once, with ratings reaching up to 50 dB noise attenuation and 120 minutes fire resistance. They can be used on escape routes, since they are also certified with panic bars, addition to the usual acoustic pressure closures.