1/2 HP, Thermoplastic, Submersible Sump Pump, With Vertical Switch, Pumps Up To 3900 GPH @ 0',Vertical Float Switch For Automatic Operation, Designed For 11" Diameter Or Larger Sump Basin, Top Suction Design Filters Debris & Minimizes Clogging, Designed For Easy Installation Without Any Plumbing Changes, Float Guard Protects Switch From Hang Ups, Epoxy Coated Steel, High Performance 1/2 HP, Motor, 1-1/2" NPT Discharge & Reinforced Thermoplastic Base.