Rectangular dampers are produced in three versions. The first one is the multi-blade damper DSQW.
The enclosure is made of 4 galvanised profiles terminated with a PQ frame and galvanised sheet metal feathers.
Maximal dimensions of the damper are limited by its width and equals to 1400 mm. The second one is the multi-blade damper DSQWA in which all elements are made of aluminium profiles.
In case of bigger dimensions the damper is composed of 2 or 3 segments. The third one is the galvanized single-blade damper DSQ which is applicable for maximal cross-sections 600 x 600 mm.
