The Wayne CDU800 features durable cast iron housing for long life and quiet operation. Fits small sump pits! This submersible pump is compactly designed for 11in. or larger sump pits. Intended for use in clear-water applications only. Automatic on/off action with mechanical float switch. Top suction design. U.S.A. Flow (GPH): 3,900, Volts: 115, HP: 1/2, Max. Total Head (ft.): 20, Discharge Port (in.): 1 1/2, On-Level (in.): 9, Off-Level (in.): 4, Min. Basin Needed (in.): 11, Impeller Shaft: Glass Reinforced Poly-Carbonate, Thermal Overload Protection: Yes Thermally protected motor Cast iron construction with corrosion-proof thermoplastic top assembly Mechanical float switch provides automatic operation and allows installation in sump basins 11in. in diameter or larger Top suction strainer filters debris High capacity 1 1/2in. NPT discharge port Glass reinforced poly-carbonate impeller with steel shaft is designed for years of use Stainless steel fasteners for superior corrosion-resistance Permanently lubricated ball bearing UL and CSA listed