The 1/2 HP Model M137 automatic Sump Pump is designed to remove groundwater from basement sump applications. This corrosion resistant pump will provide the dependability expected from a Zoeller pump. Backed by a 3-year warranty, every pump is submerged in water and tested to its published performance curve, ensuring it meets your expectations and delivers peace of mind right-out-of-the-box. Zoeller®, 137-0001, Effluent Pump, 10' Cord Length, Series: M137 Flow-Mate, 93 gpm Maximum, Automatic/Non Automatic: Automatic, 1-1/2 in NPT Outlet, 26 ft Maximum Head, 1/2 hp, 115 V, 10.7 A, 60 Hz Frequency, 1 ph, 1725 rpm Motor, 3-Wire Neoprene Cord, Non-Clogging Vortex Impeller, 130 deg F, Sleeve Upper/Sleeve Lower Bearing, Cast Iron, Domestic