Airtherm

Airtherm have a large range of both metal and uPvc dampers in circular, square and rectangular shapes with sizes from 300mm to 1800mm.
Volume control dampers need not be overly complicated. The only requirements are that they should have a low leakage when closed, not create too much resistance when open and should be easy to operate.
Series VCD Volume Control Dampers satisfy all of these requirements - the 75mm blade pitch with a blade less than 1cm thick at it's widest point, results in very little resistance when open, while the standard blade is shaped perfectly to reduce leakage when close