Applications
Spring-loaded backdraft damper for round ducts. The damper prevents back draft when the system is off. The blades are opened with air flow and are closed with a spring.
Design
The damper is made of galvanized steel housing with spring-loaded aluminium blades.
Modifications
KOMu - model is sealed with foamed rubber for noise absorption and extra air tightness.
Mounting
The damper is connected to round air ducts and fixed with clamps. The blade axis should be in vertical position. Correct air flow direction should be considered.