Valterra A01-0169LFVP Fresh City Water Inlet w/ Check Valve – BlackThis is a standard city water inlet, it’s made with a durable plastic flange so it won’t rust. It connects to your water system with a brass 1/2″ male pipe thread that is standard in the RV industry. Equipped with a check valve to ensure no damage to your water system. The flange has a diameter of 2-3/4″, mounts with two screws (not included).Product InformationCutout Dim:1-1/4″Outside Flange Dim:2-3/4″Check ValveBrass 1/2″ MPTFlange MaterialPlastic