Ventilation Grille 100 mm Stainless Steel Anti-Return Mobile Slats Automatic Closing Hood Grill Weatherproof 150 mm

ventilation grille made of stainless steel with a polished surface corrosion and rust resistant durable and very stable. With movable slats to prevent water penetration and a round back port to prevent water backflow suitable for indoor and outdoor use. Non-return valve design mounted on the outer wall of the exhaust system. When the fan stops the blades will close automatically preventing cold air as well as dust insects and other objects from entering. Widely used as extractor hoods bathroom fans exhaust fans air conditioners dryer living room ventilation kitchen fans ventilation in workshops basements offices and industrial facilities. Easy installation with standard tools. Raised triangular buckle makes tightening easy. Please wear gloves when installing to avoid scratches or injuries caused by metal materials.