Full capacity with float switch for small sump basins. Thermoplastic volute and top assembly will not rust or corrode. Overload protection keeps motor from over-heating. Permanently lubricated ball bearing never needs oiling. Epoxy-coated, corrosion resistant aluminum housing dissipates heat to keep motor running cool. Unitized shaft seal for long life. Top suction and removable screen keeps the pump from clogging. Easy to install. U.L. Listed. 11" minimum sump diameter; 9" on-level; 4" off-level. 1-1/2" NPT discharge. Pumps up to 3600 gph at 0'.