The Liberty 257 is a submersible sump pump. This heavy duty pump is used for commercial and residential wastewater transfer applications. It has a 1/3 hp oil-filled motor with thermal overload protection. The voltage needed to run this pump is 115V single phase. It has a 1-1/2" discharge size and it can handle up to 1/2" solids. The GPM performance of this Liberty 257 Sump Pump is indicated in the spec sheet. It features a vertical magnetic float switch. This pump comes with a quick-disconnect 10' cord for fast replacement of the power cord without breaking the seals to the motor. It has a cast iron housing and a vortex engineered polymer impeller. For more details, you can refer to the specification sheet. This Liberty 257 Sump Pump is covered by a 3-year warranty. This product bears the CSA mark for meeting the standards. Liberty Pumps is a leading U.S. manufacturer of pumping products for water transfer, wastewater removal and various other applications.