VAL damper plenum box
VAL damper plenum boxThe VAL damper plenum box increases the terminal dampening of supply and exhaust air vents and limits the transfer of airborne sound from one room to another. The dampening material of VAL is acoustic Dacron that does not emit fibres or particles into indoor air. Air flow range5-160 dm³/s Duct sizesØ 100-315 mm Dampening materialDacron DescriptionVAL is made of galvanised sheet steel and the dampening material is polyester wool (Dacron) that does not give fibres or particles in the air. VAL is delivered with insulated joint muffs. Features:
Quick guide
VAL Dimensions
Airborne sound insulation
VAL limits the transfer of airborne sound from one room to another.
Sound attenuation for air ducts between rooms Dn,e,wdB:
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