The Westinghouse Cast Aluminum 1/2 HP Submersible Sump Pump is the ultimate solution for dependable basement flood protection. Rated for 4100 GPH and a max lift of 28 ft. this sub pump can remove up to 68 gal. of water per minute at max flow operation, making it ideal for basements and crawlspaces. It's engineered with durable epoxy-coated aluminum housing that helps dissipate heat for optimal cooling, which is effective in promoting prolonged motor life for long-lasting reliable performance. The top suction design filters debris, which minimizes clogging and reduces airlocks to maintain uninterrupted flow; it also helps keep the sump pump running quietly and efficiently for optimal performance. Equipped with a heavy duty, energy-efficient oil-filled PSC motor with thermal overload protection, our submersible pump delivers robust performance while ensuring safety and durability. Features a direct-in vertical float switch that enables automatic operation for hassle-free and efficient water management. Designed with a 1-1/2 in. OR 1-1/4 in. (with adapter) NPT discharge for easy installation without the need for plumbing changes. This Westinghouse sub pump is suitable for sump basins with a diameter of 10 in. or larger.