Polar White Keyed Lock City/Gravity Water Hatch - This water center replacement hatch comes with both city and gravity water fills as well as the dust caps and straps. It is built of durable UV and impact resistant plastic for a long life. Will not fade or discolor and is also resistant to road salts and acids. This water fill has a brass check valve on the city water fill and a tank vent connection for the gravity water fill. Polar White in color, but is paintable to match any exterior with no preparation needed. Dimensions: (Cutout) 4-3/4 inch x 5-7/8 inch. (Outside) 6-1/2 inch x 7-5/8 inch. (Collar Depth) 1-1/2 inch. (Overall Depth) 3-1/4 inch. 1 per package.