SHUTTER FOR VENTILATION FRESH 180X180 MM WHITE

Install the louver on the exterior wall, for example at the end of a small fan duct. The closing louver prevents strong wind from entering the interior spaces when the exhaust fan is off. Functions like a backdraft damper. Do not use in supply air valves/devices or in natural draft ducts. External dimensions 180x180 mm, depth 12 mm. Louver opening 140x140 mm. No pipe connection. Material: ABS plastic, color white. This product description is an automated translation of the original Finnish description.