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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