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DWN • Volume control dampers for wall/floor grilles

  • Volume dampers
  • Galvanized steel

Galvanized steel volume dampers for SHN, SHVN, AHN, AHVN, ALG, SPN-V, SPN-VH, SDN-V and SDN-VH grilles

Brand

  • Cairox

Mounting

  • The damper can be fixed to the grille by screws or directly on the clips of the grille
  • The adjustment of the airflow can be set by a screwdriver trough the front of the grille (see drawing)

Other available products

  • For floor grilles ALG-F-0, ALG-F-15, ALG-TF-0 and ALG-TF-15 a damper is available upon request

Selection graph

Symbols and specifications

  • The graph presents the sound level in dB(A) as the sound power level without room attenuation for the combination of grille and damper DWN. The value of Vk on the graph is that for the grille without damper.

  • Ps = Pressure loss in Pa

  • Vk = Effective velocity of the corresponding grille (see selection tables SH(V)N, AH(V)N, ALG, SPN-V, SPN-VH, SDN-V and SDN-VH)
  • Min, 1/2, Max = Opening of the damper
  • dB(A) = Noise rate without room attenuation

Order example

  • DWN, 800, 200

Explanation

DWN = Damper

800 = Length

200 = Height
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