The CDU790 features durable cast iron housing for long life and quiet operation. Fits small sump pits! This submersible pump is compactly designed for 11in. or larger sump pits. Automatic on/off action with mechanical float switch. Stainless steel fasteners for superior corrosion-resistance. Top suction design. Plus, permanently lubricated ball bearing for easy maintenance. UL and CSA listed. 3-year limited warranty. U.S.A.