Pentair 011580 WhisperFlo High Performance Standard Efficiency Single Speed Full Rated Pump, 1 Horsepower, 115/230 Volt, 1 Phase Oversized strainer basket and volute - industry standard in pool Pump Standard and energy-efficient square flange motors available 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