"This Nortrac Suction Filter Assembly is a good choice for applications where a suction strainer is not possible. Includes a 5-lb. bypass for cold start protection. 3/4in. NPT inlet and outlet ports includes 149 micron steel mesh filter and two 1/4-20 UNC mounting holes. Accessory Type Suction filter assembly, GPM 18 max, Includes 5-lb. bypass for cold start protection, Inlet Port in. 3/4 NPT, Length in. 7 1/2, Material Type 149 Micron mesh stainless steel screen, Max. PSI 200, Outlet Port in. 3/4 NPT. 18 GPM max Replacement filter element also available"