The Best-In-Class 3/10 HP Model M63 automatic Sump Pump is designed to remove groundwater from basement sump applications. Backed by a 5-year warranty, this corrosion resistant pump will provide the dependability expected from a Zoeller pump. 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.