Further information for Helios Apparatebau RVK 400 - shutter handreba
For closing exhaust air and supply air openings. Tightly closing, spring-locked. Suitable for reversible fans. All parts made of UV-resistant, shatter-proof plastic, light grey in colour, spring made of stainless steel. Max. supply air flow speed 6 m/s Max. exhaust air flow speed 8 m/s