Fully submersible back up pump for an easy addition to any sump system. Epoxy coated steel housing and cast iron bottom. Corrosion resistant thermoplastic impeller for maximum water flow. Protective battery case included with LED (light emitting diode) display and audible alarm. 1-1/2 In. NPT discharge for easy installation and compliance with building codes. For use in 14 In. diameter or larger sump basins. Ultra quiet pump is expertly engineered and assembled. Removes up to 10,000 gallons on a single battery charge. 2900 GPH at 0 Ft., 2340 GPH at 5 Ft., 1680 GPH at 10 Ft., 600 GPH at 15 Ft. Deep cycle marine battery recommended.