Made of high-quality 304 stainless steel, high-quality, thick, not easy to deform, rustproof. Built-in insect net, fine mesh to keep pests away. The 100mm dome cover is designed to withstand the elements and prevent leaks and unwanted drafts. p> Fits all 4" diameter vents such as dryer exhausts, ducts, home vents, extractors, air conditioners, kitchen fans, gas, electric dryers, range hoods, and various industrial applications. Easy to install and easy to wear. Gloves are required when installing! Packaging: 1 vent Dimensions: 14*9.8*4.5 cm Material: stainless steel Note: Due to the different images displayed, the actual color will prevail. Dimensions are measured by hand, there may be some deviations (1-2 cm).