[Size] - Outlet Diameter: 115mm / 4.53 Inch; Outlet Height: 40mm / 1.58 Inch; Overall Diameter: 145mm / 5.71 Inch; Fit for Ducting Diameter: 120mm / 4.72 Inch [Material] - Made of stainless steel material with good rust resistance. [Fly Screen Mesh Design] - There is a fly screen mesh built inside, providing you a much comfortable living place. [Easy to Use] - it is available for wall mounted or ceiling mounted, just plug to fit, also very convenient to clean and maintain daily. [Applications] - Great for tumble dryers vent, gas or electric cooker hood extractors, fireplace, bathroom, kitchen fan, portable air conditioner Exhaust vent, HVAC vent, trailer and so on. Specifications: Material: Thickened Stainless Steel Vent Size(Approx): 120mm / 4.72 Inch Mounting Diameter*Mounting Height: 115x40mm / 4.53x1.57 Inch Maximum Diameter: 145mm /5.71 Inch Thickness: 0.6mm Hole Diameter: 4.5mm / 0.18 Inch Hole Distance: 130mm / 5.12 Inch Features: Excellent Material - Made of Stainless Steel, simple design and durable. Easy to Use - it is available for wall mounted or ceiling mounted, just plug to fit, also very convenient to clean and maintain daily. Applications - Effectively prevent the entry of rain debris, hemispherical hood, windproof and waterproof, perfect for the external wall exhaust, fresh air and hood exhaust. Package Includes: 1 x Spherical Air Vent