Square diffuser with frame for Ø125 mm pipe/adapter usable for both supply and extract air in indoor environments.
Consisting of a back-painted square glass screen (white or black), spaced from the wall/ceiling so as to spread the air tangentially on all four sides.
Tabs on the frame allow the screen-wall distance and thus the air flow to be adjusted in two steps (plus a fully closed position).
The diffuser screen is removable and can be very easily reassembled for cleaning.