PATIKIL 8 Inch Aluminum Vent Cover Louver Shutter Exhaust Fan Louvered Vent Automatic Gravity Round Grill Self-Closing Vent Cover for Greenhouse Industrial Exhaust HVAC System White

- Outer Diameter: 250mm / 10 inch; Inner Diameter: 190mm / 7.5 inch; Interface Diameter: 200mm / 8 inch, suitable for flow fan or vent hole with a 200mm / 8 inch ID; Size: 20 x 32 mm / 0.8 x 1.3 inch (Depth*Height); Packing Listing: 1 x Exhaust Fan Louvered Vent - DURABLE ALUMINUM MATERIAL: The Louvered Vent is constructed from top-grade aluminum, ensuring long-lasting durability with resistance to corrosion or rusting. The surface is smooth and no burrs, looks delicate craftsmanship - RESISTANT TO WEATHER: Through meticulous manufacturing, the louvers are designed to completely seal shut, effectively blocking water intrusion. With a sturdy, and precisely engineered build, this shutter is capable of enduring weather conditions - MULTI-USE: The shutter louvered vent is designed to open and close automatically using gravity, normally used with flow fan for air exhaust and ventilation. It has good ventilation performance and easily block backdraft and unwanted air, moisture and dust. Widely used in home, kitchen and bathroom, office building, mall, factory, planting greenhouse, garage etc - EAST TO INSTALL: 1. Remove the protective grille of the flow fan; 2. Embedded the vent cover into the fan outlet; 3. Fix the vent cover with screws(not included)