The BLACK+DECKER 350 gallons-per-hour pool cover pump is specifically designed for the purpose of keeping your pool protected by removing water off the top of swimming pool covers. A manual switch that can clear drain down to 1/8 inch of water guarantees your cover will remain light and secure. Fully submersible and equipped with a specialized pre-filter to prevent clogs caused by debris, this cover-pump will run stress-free throughout the winter.