The Paddock 2448 Main Drain can be used for both floor and wall applications. Standard features include our no leak flange and flanged penetrations both on the inside of the box and outside. Our flanged connection in the box is a safety measure that eliminates the usage of a test ball when pressurizing the lines during start-up. Additionally that flanged connection and winterization plate allows you to drain your pool and winterize in northern climates. Constructed of 304L stainless steel these sumps and covers have a 40 year life use and are warrantied for life if inspected annually. Suction outlets include an Anti-vortex reduction device. All main drains include hydrostatic relief valve. All Paddock Main Drains meet ANSI/APSP-16 requirements and are NSF Approved.