Feature: 1. HEAVY DUTY MATERIAL: RV water inlet is made of premium ABS material, which has excellent heat resistance, cold resistance and mechanical strength, long lifespan. 2. WITH COVER AND LOCK: RV fresh water inlet uses a magnetic cover and lock so nothing can contaminate your water supply, and also prevents it from opening due to bumps in the road while driving. 3. UNIQUE INLET DESIGN: An innovative inlet design allows filling of the water reservoir using pressure, meaning it does not have a threaded connection. 4. REVERSE EXHAUST: The 10mm diameter exhaust port has reverse exhaust design, which prevents a vacuum from forming in the tank, making it easy to fill up with water. 5. SIMPLE INSTALLATION: The fill inlet adopts simple screw installation and can be connected to most water intakes. It is compact, easy to install and is used in a variety of vehicle types such as motorhomes, campervans, trailers, cars. Specification: Item Type: RV Water Fill Hatch Material: ABS Size: Approx. 132x145mm / 5.2x5.7in Installation Hole Size: Approx. 78mm / 3.07in Vent Hole Size: Approx. 10mm / 0.39in External Pipe Outer Diameter: Approx. 40mm / 1.57in External Pipe Inner Diameter: Approx. 32mm / 1.26in Application: Suitable for pressure filling and fast draining Fitment: Fit for RVs, campers, motorhomes, yachts, and other large transport vehicles. Package List: 1 x RV Water Fill Hatch 1 x Cover 2 x Keys 1 x Gasket