Butterfly regulating damper made of galvanized sheet steel, equipped with rigid blade, manually adjustable. Adjustment is performed by turning the actuating lever between 0° and 90°. This allows a continuous adjustment of the flap’s position from completely closed to completely open. After achieving the desired setting, the lever can be locked in position by means of a locking screw.
Supplied with flanged ends. The damper is manufactured from materials having reaction to fire classification A1.