Master Plumber, 4/10 HP, Thermoplastic, Automatic Submersible Sewage Ejector Pump, Corrosion Resistant, Piggyback style tethered float switch for automatic or manual operation, Handles up to 2" solids, 8' Power Cord, Performance: GPH 0' = 5,250, 5' = 3,900, 10' = 2,550, 15' = 950, Max Lift 18', Energy Efficient 8.5A Motor With Overload Protection Provides Safe Operation, Easy Installation, Requires Minimum 18" Diameter Sewage Basin, 2" NPT Discharge, 1 Year Warranty.