Thetford 94251 Fresh Water Inlet is manufactured by B&B Molders and is suitable for RV fresh water system applications. The lockable gravity hatch accepts 1-1/4 inch or 1-3/8 inch water fill hoses, and features cutout dimensions of 4-3/4 inch height x 4-1/4 inch width. With outside dimensions of 6-1/2 inch height x 6 inch width x 3 inch depth, the unit is highly UV and impact resistant, and certified by IAPMO/NSF/CSA/TEI. It includes an installation kit with a 3/8 inch tank vent connection, and is a B&B Molders' cross reference to JFE12-A.