Auto On/Off pool cover water removal pump. Maximum flow rate is 3000 GPH (gallons per hour) using 1-1/4 In. drain hose. Includes: Check-valve with 3/4 In. garden hose adapter to reduce repetitive cycling, 25 Ft. power cord (always plug into a GFCI (ground fault circuit interrupter) outlet), 25 Ft. pull-to-shore rope included to help position the pump on the pool cover.