Used Ertel-Alsop Filter Housing System, Model 12PY1VDOST7. Double O-Ring Pak Housing, 316L Stainless Steel, 1.5" Tri Clamp Inlet and Outlet Connections, Vent and 0-60 psi Pressure gauge in dome. With Silicone O-Ring in Base, Filter Base w/ 4" High Drip Containment Flange, Teflon Clamp Gaskets, Teflon Encapsulated Silicon O-Ring, Filter Housing to be Electro-polished inside and out. Serial # 3326-PA