Master Plumber, 1/2 HP, Cast Iron & Zinc, Sump Pump, Piggyback Vertical Float Switch For Manual Or Automatic Operation, Performance: GPH 0' - 4,700, 5' = 4,200, 10' = 3,540, 15' = 2,820, 20' = 1,800, Maximum Lift 24', Corrosion Resistant Zinc Motor Housing, Heavy Duty Cast Iron Volute, & Smooth Flow Hydraulics, Energy Efficient Motor, 1-1/2" Discharge, 8' Power Cord, Fits In 10" Basin Or Larger, 2 Year Warranty.