1/2 HP, Cast Iron, Submersible Sump Pump, With Vertical Switch, Designed For 11" Diameter Or Larger Sump Basin. Pumps Up To 4200 GPH @ 0', Durable Cast Iron Volute, Reliable, Reinforced Poly Carbonate Impeller, Corrosion Resistant Stainless Steel Fasteners, Top Suction Design Filters Debris & Minimizes Clogging, Oil Filled, Thermally Protected Motor Prevents Overheating, Designed For Easy Installation Without Any Plumbing Changes, Epoxy Coated Steel, High Performance 1/2 HP, Motor, 1-1/2" NPT Discharge & Durable Cast Iron Base, Easy Carry Handle For Portability, Float Guard Protects Switch From Hang Ups.