"This Nortrac Suction Strainer mounts through the wall of the reservoir with a 1 1/2in. NPT port. Suction port is 3/4in. NPT. The 4in.L strainer has 100 mesh 149 micron stainless steel screen. GPM 10 or less, Port Size in. 1 1/2 in. NPT port, Suction Port in. 3/4, Length in. 4, Accessory Type Suction strainer, Material Type 149 Micron mesh stainless steel screen. Not for use with pumps over 10 GPM"