1Sturdy Material: Made of ABS material, the vent cap is resistant to oxidation, fade and deformation, can withstand various outdoor environments, maintaining its color even after long exposure to sunlight. 2Mesh Screen Design: The roof round ventilation cap is equipped with a mesh screen to prevent debris from entering the vehicle, providing a peaceful environment for your RV. 3Enhanced Air Exchange: The mushroom ventilation cap facilitates fast air exchange between indoors and outdoors, providing refreshing air for the vehicle interior. Ideal for bathrooms, kitchens, warehouses, and lounge. 4Versatile Application: The plumbing vent cap is an excellent solution for repair and ventilation of damaged or leaking vehicle roofs, suitable for marine, boats, yachts, RVs, trailers, and motorhomes. 5Easy Installation: The round mushroom vent cap can be top mounted, comes with mounting screws, without complicated tools, saving your time and effort. 1 x Round Ventilation Outlet 7 x Screws