Eco-Flo EFSA50 1/2 HP Heavy Duty Cast Iron Submersible Sump Pump, specially designed for high-volume water removal from basement Sump Pits and other residential basins. The cast iron motor housing provides efficient motor cooling, and its a corrosion resistant thermoplastic impeller. This Sump Pump has a vertical switch for basins 11" in diameter. The continuous duty, efficient 115V PSC (permanent split capacitor) motor allows for a lower carbon footprint; higher efficiency using less energy to operate. This sump pump has an 8' foot cord, its submersible for a quiet operation, it has a 1-1/2" FNTP discharge, it pumps 1/2" solids, and it has a 5100 GPH flow and 26" vertical lift.