Helios Ventilatoren RSK 200 Fan cover lid

Automatic closing flap for insertion into the pipe run. Prevents warm ambient air from flowing out and unwanted cold air from entering the room when the fan is switched off. Automatic function in the under as well as over-pressure mode (installation position can be rotated) by spring lock. At horizontal flow, set rotation axis perpendicular. With vertical flow function only in ascending air flow. Casing made of galvanized sheet steel, aluminum flaps, return spring made of stainless steel.

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