Product Description Headquartered in Bergen, NY, Liberty Pumps is a leading U.S. manufacturer of pumping products for ground water and wastewater removal in residential and commercial applications. From the Manufacturer With a shut-off head of 37-Feet and 3/4-Inch solids-handling capability, the 280-series by Liberty covers a wide-range of low-head to mid-range pump applications. Designed for STEP systems, mound systems, liquid waste transfer and high output sump applications, you can count on the 280-series to offer superior performance. High-output 1/2 hp motor submersible with rugged cast iron housing. The 280-series features a hermetically sealed motor with thermal overload protection, a stainless steel removable bottom screen, a stainless steel rotor shaft, and permanently lubricated upper and lower bearings. This sump pump is for sump pits no less than 10-Inch in diameter.