Ceiling air diffuser FD

squareround

FOR COMFORT ZONES, WITH FIXED AIR CONTROL BLADES Circular and square ceiling swirl diffusers that create high induction levels, for high room air change rates Nominal sizes 300, 400, 500, 600, 625 Volume flow rate range 9 – 235 l/s or 31 – 846 m³/h Diffuser face made of galvanised sheet steel, powder-coated For supply and extract air For variable and constant volume flows For all types of ceiling systems, and with an extended border also suitable for freely suspended installation High induction results in a rapid reduction of the temperature difference and airflow velocity Air change rates of up to 35 per hour can be achieved by arranging several diffusers in a row with a minimum pitch of 0.9 m (centre line to centre line) Ideal for comfort zones Optional equipment and accessories Exposed diffuser face available in RAL CLASSIC colours Plenum box with cord-operated damper blade and pressure tap Ceiling swirl diffusers with square or circular diffuser face. Supply air and extract air variants for comfort zones. Diffuser face with fixed air control blades for horizontal swirling supply air discharge creating high induction levels. For installation into all types of suspended ceilings. Ready-to-install component which consists of the casing, diffuser face, spigot, and a cross bar to which the diffuser face is fixed. The diffuser face is fixed to the cross bar with a central screw. Spigot suitable for ducts to EN 1506 or EN 13180. Sound power level of the air-regenerated noise measured according to EN ISO 5135.