Be prepared for the most intense flooding with the Wayne Cast Iron 1/2 HP Submersible Sump Pump. This sump pump is designed to lie submerged in the sump pit below your basement floor and remove water at a high rate of discharge and is more stable than a pedestal sump pump. If you live in a low lying area that accumulates plenty of rain water, the submersible sump pump is a great investment. The vertical float switch allows this unit to be installed in 11" or wider sump pits. For groundwater applications only.Don’t leave your basement at risk, install a Wayne Submersible Sump Pump.Features Top suction screen filters debris High capacity discharge Thermally protected motor Vertical float switch Heavy duty cast iron construction For groundwater applications only Specifications 3,900 GPH at 5' 3,150 at 10' 2,100 at 15' 600 at 20' Discharge Size:1-1/2" NPT Type: Submersible Application: Fits 11" basins Horse Power: 1/2 HP