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Soundproof ventilation solutions

In case the door is intended to provide increased acoustic insulation with simultaneous air flow between the adjacent rooms (closed rooms with ventilation/WC/bathroom), we can offer an automatic drop-down seal with air opening or a sound-proof ventilation profile installed at the top of the door leaf, both having the sound insulation value of Rw28dB (the latter can be installed only to straight-edged doors) or an acoustic door grille embedded in the door leaf and having the sound insulation value of Rw32dB.