Features: 1.Excellent Material: The material is engineering grade ASA material, it's not easy to turn yellow, and durable. The diameter of the gravity water inlet is 40mm, and the filling speed is very fast. 2.Water Protection: The rubber dust cover prevents dust from entering, which keeps the water clean and hygienic. And the product is lockable,equipped with 2 keys to ensure water safe. 3.Special Design: The water tank vent has its own exhaust port to prevent the water tank from forming a vacuum and unable to add water. 4.Magnetic Design: The product has a magnetic buckle lid, gently covering it, it can be stable and firm, not easy to loose. 5.Easy Installation: The outer cover has a logo of faucet for easy identification. You can easily complete the installation work without any professional guidance. Specification: Item Type: Gravity Water Fill for RVs_x000D_ Color: White_x000D_ Material: ASA_x000D_ Waterproof Rating: IP44_x000D_ Installation Size: Approx. 79 x 79 mm / 3.1 x 3.1in_x000D_ Fitment:_x000D_ Replacement for RV, Boat Camper, Trailer