Thetford 94217 City Fresh Water Inlet by B&B Molders is designed for connecting to city water supplies. It features a 1-1/2 inch diameter cutout size and 3 inch outside diameter x 1-11/16 inch valve depth. Additionally, it is composed of UV and impact-resistant plastic and is equipped with a 1/2 inch male pipe thread (MPT) check valve. Certified by IAPMO, NSF, CSA, and TEI, this single item has a B&B Cross Reference of 160-85-A-3P-A.