Sink Drain Pump System HP 1/3 hp Rated Voltage 115V AC Amps 5 A Switch Actuation Vertical Float Switch Electrical Connection Piggyback Pump Body Material Polypropylene Impeller Material Plastic Basin Material Polyolefin Basin Capacity 4.3 gal Basin Dia 13-3/4 in Basin Height 11-1/8 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 38 gpm Flow Rate @ 10 ft of Head 25 gpm Flow Rate @ 15 ft of Head 15 gpm