XSMYdpuk Whirlybird Turbine, Cap Vent Round, Roof Ventilator, 12 Inch External Extractor Wall Dryer Vent Cap, Stainless Steel Louver Grille Cover, DIY Easy Vent Hookup Kit, For Ventilation And Exhaus

Rainproof and noiseless: curved wind blade encrypted blades to ensure that rainwater does not intrude under the working condition. High exhaust efficiency Lightweight operation. The chimney rotary hood is especially suitable for chimneys that are not frequently used. Wide range of applications: farms, machinery factories, roof chimneys, industrial plants, production workshops, kitchens, canteens, farming, workshop ventilation Wind, tile house, flue exhaust smoke and other areas Product material: Ventilation Outlet made of 304 stainless steel, durable, utilizing the natural wind and air thermal convection generated by the temperature difference between indoor and outdoor, driving the turbine to rotate, discharging the dirty indoor air. Vent Connection Size: 4.3inch(110mm), 6.3inch(160mm), 7.9inch(200mm), 9.8inch(250mm), 11.8inch(300mm), 15.7inch(400mm) Simple installation: all air hoods are shipped as a whole, no assembly is required, comes with mounting accessories for easy installation, and can be freely operated on relatively gentle slopes to further expand the installation range by simply removing and fixing them.