This is a 1.0 horsepower pump used for several Accu-Tab PowerBase 1030 Chlorinator Systems. This replacement pump is now available for cases where you cannot repair the pump and it must be replaced. Hayward is recognized as the industry leader with high performance pumps. Haywards pumps are engineered for performance and dependability. These pumps are equipped for a heavy-duty work load to keep operation cool, quiet, and effecient. All Hayward pumps are designed to handle the most demanding installations, raising the standard of performance for waterfall, spa and swimming pool pumps.