3" X 3" Ductile Iron Grooved By Flanged Units Suction Diffuser Rear Strainer Pullout, Full Length Straigthening Vane Assembly Ensures Uniform Flow to the Suction Inlet of the Pump, Oversized Body Cylinder Ensures Minimal Pressure Drop, Metering Port Allows for the Monitoring of System Conditions, Disposable Fine Mesh Start-Up Strainer Promotes Cleaner More Trouble Free System, Removable Cover Plate and Reusable 'O' Ring Allows for Easy Access and Maintenanceof Permanent Strainer, Available In 125 PSI/250 PSI Working Pressures with Either Flanged By Flanged or Gooved By Flange Connection, Weight:41 Lbs, In Bulk, Made in USA. Surface Rust