Feature: 1. PREMIUM MATERIAL: 8 inch roof vents cover is made of premium aluminum alloy, which increases the product's service life. The high performance powder coating has strong erosion resistance. 2. WEATHER RESISTANCE: The roof exhaust vent is suitable for bathroom or kitchen exhaust ventilation systems, the roof vent cover comes with a rear windshield to provide effective ventilation while preventing entry of wind, rain, snow and outside damage. 3. EXCELLENT VENTILATION: The roof exhaust vent provides maximum airflow and guard for kitchen and roof exhaust systems and can be used with 8 inch ducts and exhaust fans for indoor ventilation. 4. EASY INSTALLATION: The 8 inch vent includes an underneath duct extension for connecting flexible ducts and four holes in the panel to help you install it more securely. 5. WIDE APPLICABILITY, EXQUISITE APPEARANCE: The 8 inch roof vents cover is suitable for a wide range of roof types, convenient and practical. Exquisite craftsmanship, beautiful appearance, enhance the overall beauty of the house. Specification: Item Type: 8 Inch Roof Vents Cover Material: Aluminium Alloy Weight: Approx. 2284g/80.6oz Size: Approx. 36x32cm / 14.2x12.6in Diameter: Approx. 20cm/7.9in . Package List: 1 x 8 Inch Roof Vents Cover (Total 2 Accessories) 4 x Screws 1 x Hex Wrench Note: Manual measurement please allow some error.