Hydrotools By Swimline Filtration Pumps have set the standard for effective pool filtration for over a decade. The AUTO-FLO series was designed as the replacement pump you can feel comfortable with for years down the road. Its structed was designed strategically so it can serve as a drop-in replacement pump without requiring major plumbing alterations when replacing an old pump. Constructed with commercial grade, double-reinforced thermoplastic, these pumps were built to tackle all the elements, sporting UV and corrosion resistance. Built in automatic thermal air-flow ventilation systems constantly works in the background to ensure superior strength, durability, and longevity. The AUTO-FLO collection features brand new, innovative technologies that amplify the power of our pumps to maximize flow and also minimize noise. Each housing is equipped with an extra-large strainer basket so you can increase your time between cleaning cycles, so you can spend more time enjoying your crystal clear pool.