Proline 20355 Skimmer Pump 2550 GPH 11.5' SHT are designed to fit most pond skimmer filters while delivering reliable and powerful performance. Employs hybrid technology that integrates the power of direct drive pumps and the energy efficiency and safety of magnetic drive pumps. Continuous duty pumps move large volumes of water silently and efficiently through filtration systems or to a waterfall, stream or fountain. High efficiency vortex impeller, ceramic impeller shaft and bearings provide energy savings while maintaining high output.