• H.D.P.E side seals on individual blades
  • Fully enclosed blade drive (gear train) mechanism
  • Fully sealed low leakage 2 mm thick aluminium case
  • Opposed blade operation
  • Aerofoil blade section with tip seal
  • Blade position indicator (motorised and manual)
  • Unique ratchet multi-position control lock
  • 20 mm, 35 mm flange or spigotted section available
  • Overall width 65 mm with 20 mm flange, 75 mm with 35 mm flange
  • Extended spindle kit for motorisation
  • Rectangular shallow fit/spigotted section available
  • Aluminium, stainless steel and composite blade sections available


Click here to download the data sheet.

Heavy duty model also available.


Other available products

Volume Control Damper

Volume Control Damper