Shut-off damper

ASUR-ASUP - Shut-off dampers for circular connection are used to install a ventilation system in buildings with spiral or smooth ducts. The damper handle is made in such a way that the damper can be insulated with 50 mm stone wool and the handle remains visible from the outside. The opening angle of the blade can be adjusted from 0 ° to 90 °. The blades on the inside has a sealing gasket, this type of damper tightness class is 4 according to test standard LST EN 1751.