Hayward SP4015 NorthStar 1-1/2-Horsepower Energy Efficient Pool Pump Rugged, one-piece strainer housing molded of corrosion proof reinforced thermoplastic for extra durability and long life Exclusive balance of quiet operation and superior flow characteristics meets demanding needs of in-floor cleaning systems and solar applications Exclusive, high-performance north star motor design for quieter, cooler and more energy efficient operation Cam and ramp lid seals with less than a quarter turn, massive 220 cubic inch basket for ease of maintenance; 1-1/2 horsepower energy Threaded union connections reduce installation time included in 2-inch socket, 2-1/2-inch slip; high profile motor mounting base