Wayne SPF33 Sump Pump, 1-Phase, 9.5 A, 120 V, 0.33 hp, 1-1/2 in Outlet, 15 ft Max Head, 3750 gph, Thermoplastic1 3 hp coated steel and reinforced thermoplastic submersible sump pump. Assembled in the US with foreign and domestic parts. Float switch tested to 1 million cycles. Top suction design eliminates air locks and clogging from debris in bottom of sump pit. Epoxy coated steel motor housing and corrosion resistant, thermoplastic pump base. Fully submersible. 1 3 hp max flow rate is 3600 gph at 0 ft. 1 1 2 NPT discharge. For use in 11 in Dia or larger sump