Description: Gravity Water Fill Hatch Inlet for RV Camper Trailer Cars Accepts 1-1/2" (40mm) water fill hose; Cutout Dimensions: 3-3/8" (85mm)diameter UV and impact resistant, resists road salts and acids. Spring and sealed ring design,leak proof and anti loosening. Lockable,comes with 2 pieces keys,ensure using water safely. Specification: Material: Plastic Color: White Cutout diameter: Approx. 85 mm/ 3.34 inch For 40 mm/1.57 inch hole Size(L x W X H): 11 x 11 x 8cm / 4.33 x 4.33 x 3.14 Inch Package Includes: 1 Piece Water Inlet 2 Pieces Keys