Wayne SPV500 1/3 HP 3,100 GPH Pedestal Sump Pump, Cast Iron Cast iron pump housing for durability Coated steel column and stainless steel fasteners for corrosion-resistance and strength High capacity 1-1/2-inch NPT discharge 2 pole float switch provides positive on/off action for years of use Thermally protected, high torque motor provides extra power and durability