GROCO Clam Shell Style Hull Strainer w/Mount Ring f/Up To 2-1/2" Thru Hull Bronze. C84400 bronze body and door. Cast filter slots. Pressure relief holes in door casting. Flow Type: STD Mount Ring Incl: YES Max T-Hull: 2-1/2" Perf Dia: Cast Slots Package Contents: GROCO Bronze Clam Shell Style Hull Strainer w/Mount Ring f/Up To 2-1/2" Thru Hull GROCO SC-2500: Clam Shell Style Hull Strainer w/Mount Ring f/Up To 2-1/2" Thru Hull Bronze