VAL 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.
- Damper plenum box for terminal dampening of supply and exhaust air vents, for example in residential ventilation
- Dampening material acoustic Dacron that does not emit fibres or particles into indoor air
- Insulated joint muffs