The PDA-R (round front panel) and PDA-Q (square front panel) are swirl diffusers with fixed delicately stamped, radially arranged blades. The square diffuser PDA-Q may be perforated in two different variants. The blades of the variants Q1 and Q2 are slightly less delicate in their perforation. The front panel is mounted by a central screw.

FUNCTION AND EFFECT

The many stamped in blades create an air deflection in the respectively tangential direction causing a rotating ceiling flow with high induction to be formed. This way air flow of very low temperatures can be introduced into the room draft-free.