Master Plumber, 1/2 HP, Thermoplastic, Submersible Sump Pump, Maximum Pumping Capacities Up To 3,630 Gallons Per Hour, Vertical Float Switch, Can Be Used In 10-Ft. Diameter Or Larger Sump Basin, Performance: GPH At 0-Ft. = 3630, 5-Ft. = 3200, 10-Ft. = 2700, 15-Ft. = 2000, 20-Ft. = 1200, 3 Year Warranty.