WhisperFlo pump costs less to operate, because it uses less horsepower to produce required water flow. Specially-engineered design assures whisper-quiet operation as documented in rigorous ETL tests. Oversized strainer basket extends time between cleanings. See-through lid makes inspection fast and easy-engineered polymer remains clear and strong for years. The user-friendly Cam and Ramp Lid is easy to remove and quickly locks in place with a quarter-turn. Standard and Energy-efficient Square Flange Motors avaliable. Lower HP’s deliver higher performance than industry standard. Compatible with all cleaning systems, various filters and jet action spas. Heavy-duty/durable construction is designed for long life (Residential/Commercial Applications). New Motor increases life, energy, efficiency, ease of installation and better cooling for long service life.