Sink Drain Pump System HP 1/2 hp Rated Voltage 115V AC Amps 4.9 A Switch Actuation Vertical Float Switch Electrical Connection Piggyback Pump Body Material Thermoplastic Impeller Material Stainless Steel Basin Material HDPE Basin Capacity 6 gal Basin Height 13-3/8 in Basin Inlet Diameter 1 1/2 in Outlet Diameter 1 1/2 in Vent Size 1 1/2 in Flow Rate @ 5 ft of Head 55 gpm Flow Rate @ 10 ft of Head 51 gpm Flow Rate @ 15 ft of Head 46 gpm Flow Rate @ 20 ft of Head 39 gpm