Fire-sound-proof doors Formo EI 30/31 dB
Характеристики
The armed sound-proof doors Formo (29 dB) are fitted to the objects are increased requirements for sound insulation: hotels, hospitals, theaters, schools, etc.
The armed sound-proof doors Formo (29 dB) are fitted to the objects are increased requirements for sound insulation: hotels, hospitals, theaters, schools, etc.