Hayward WGX1031BHF2 Hi-Flow Cover and Inner Frame, 9 by 9-Inch Hayward hi-flow cover and inner frame safely covers with variety and style New safety suction outlets meet all federal requirements Cover open area 23.96 square inch, flow rate certified at 112 GPM Approved flow GPM floor (horizontal) 264 and approved flow GPM wall (vertical) 264 Measures 9-inch length by 9-inch height