The aphonic vent is formed by v-shaped sound-absorbing fins in galvanised steel. The vent has anti-rain profiles and an internal protection grille.
Grilles in stainless steel or aluminium are available upon request. The most common use is for the muffling of air-treatment units of evaporative towers, boiler rooms, etc.
Sound-insulation indexes:
- AKR 300 = Rw 18
- AKR 500 = Rw 21