Features: *Durable fan cover: made of high quality Oxford material, light and durable, waterproof, dustproof, windproof, lifetime use. *Protective turbine roof Cover: A necessary weather turbine protection bag that you have ever needed for your turbine roof vent. Protect turbines from rain, snow, wind and dust. It also reduces heat loss in the home. *Universal hood size: Diameter x height (width :12" x 17.5", length :20" x20"). Suitable for 12 "or 20" turbines with external support structures. *Easy to install and remove roof exhaust cover: Roof exhaust cover is easy to use. Heavy duty ferrule and tether for easy installation and durability. There is an elastic rope below, which increases the stability and will not be blown away by the wind. Specifications: Name: Turbine roof cover Material: Oxford cloth Size: 30*45.5cm, 50.5*50.5cm Color: Black, beige Product weight: 400g Package Contents: 1*Turbine roof cover Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Turbine Roof Vent Cover, Heavy Duty Turbine Ventilator Protector Shield. Made of high-quality materials,safe,environmentally friendly,durable. Perfect price-performance ratio, save you more money. We will ship it ASAP,when you place the order. If you have any questions, please feel free to contact us, we will solve it for you immediately.