The S2 Series 1/3 HP All Cast Iron Sump / Effluent Pump is built with premium construction and engineered to be a workhorse for the professional contractor. It is designed for peak performance using a cool running, energy efficient permanent split capacitor (PSC) motor, with upper and lower sealed ball bearings giving extreme efficiency, high capacity, and ultra-quiet operation. It has a cast iron vortex impeller which can pass 1/2 in. solids. The S2033 sump / effluent pump pushes a massive 3200 GPH at 10 ft. while only pulling 5.0 Amps saving on the electric bill. It is thermally protected, has stainless steel fasteners, and a carbon-ceramic shaft seal with a Buna-N-Seal for long life and proven reliability. You can feel safe that The Pro Series Is Pumping For You.