Pentair SF-N1-1/2FE SuperFlo Single Speed Energy Efficient Pump, 1/2 HP SF-N1-1/2FE SuperFlo single speed energy efficient pump Features thick walled body parts, a heavy-duty 56 square flange motor and highly engineered hydraulics Extremely quiet operation; Cam and Ramp lid Unionized fittings (1-1/2-inch internal slip and 2-inch external slip) Integral volute and pot reduce hydraulic noise; measures 28-1/4-inch length by 15-inch height by 12-1/2-inch width