Rectangular construction - circular connection pieces available. Standard frame thickness 3 mm. Maximum size of damper 1200x1200 (WxH) - modular constructions available. Leakage class of a closed damper prEN 1751 class 1.

Rectangular construction - circular connection pieces available. Standard frame thickness 3 mm. Maximum size of damper 1200x1200 (WxH) - modular constructions available. Leakage class of a closed damper prEN 1751 class 3.

Rectangular construction - circular connection pieces available. Standard frame thickness 1 mm. Maximum size of damper 2400x2400 (WxH) - modular constructions available. Leakage class of a closed damper prEN 1751 class 1.

Rectangular construction - circular connection pieces available. Standard frame thickness 1 mm. Maximum size of damper 2400x2400 (WxH) - modular constructions available. Insulated blades, heat transmission 4 W/(m2 K). Leakage class of a closed damper prEN 1751 class 4.

Circular construction 100...315 and 350...1000 mm. Adjustable cone and airflow measurement taps for differential pressure measurement. Classification of casing leakage EN 1751 class C.