Dolphin Diamond Amp Master 4750 Type 3 Marine/Reef/Abrasive Water Seal External Water Pump Quiet and cool running 1/15 HP, 1725 RPM Circulates 4750 GPH without heat transfer 115 volt, 3' corded Supplied with 1.5" super seal unions and anti-vibration pump pad 3-year factory warranty + factory service guarantee