Oversized strainer basket and volute 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. The WhisperFloŽ Pump is designed for long life Designed for residential and commercial applications 1 SPEED WHISPER FLO IN-GROUND POOL PUMPS 2 SPEED WHISPER FLO IN-GROUND POOL PUMPS