The JR Products Gravity Water Dish accepts either 1-1/4” or 1-3/8” water fill hose and includes a tank vent connection. Direct OEM replacement. Both UV and impact resistant, it is also resistant to road salts and acids. Cutout Dimensions: 3-1/2" diameter. Outside Dimensions: 4-3/4" diameter. Dish Depth: 3/4". Spout Depth: 2-1/2".