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, Max lift 24′, Corrosion Resistant Zinc Motor Housing, Heavy Duty Cast Iron Volute, & Smooth Flow Hydraulics, Energy efficient motor save operating costs, 1-1/2″ discharge, 8′ Power Cord, Fits In 10″ Basin Or Larger, 2 Year Warranty.