Aqua-Flo by Gecko's Circ-Master pump takes 24-hour filtration to a new level, delivering the highest GPM of any recirculation pump on the spa industry. Higher GPM allows the Circ-Master to operate a high-flow heating system resulting in increased heating efficiency and up to four times the filtration. Spa Pump Features: 48 frame, continuous-duty construction with front and rear, permanently lubricated ball bearings for extended motor life. Carbon-graphite self-lubricating seal designed for continuous duty operation. 1-1/2" suction and discharge. Quick release compression fittings allow for easy installation or maintenance. Available in side discharge and center discharge models. Available with 115v and 230v motors.