Perko Water Strainers are designed for easy installation and cleaning. Features include universal mounting lugs cast into both sides, four outside tie rods, and a 304 stainless steel strainer basket to minimize electrolysis. Screen hole diameter 0.077 inch, 46 open area. Hinged lugs for the cast bronze cover permit easy removal and cleaning of the strainer basket. A drain plug in the bottom casting is provided for easily removing sediment and draining for winterizing. « less