Hayward Hi-Flow Replacement Cover & Inner Frame 12" x 12" White Square Add'l Items / Sizes: WGX1030Z8A - Screw pack for all replacement sets Stainless steel Includes: (4) self tap and (4) machine thread WGX1031BHF2 - 9” Replacement cover and inner frame WGX1032BHF2 - 12” Replacement cover and inner frame WGX1033BHF2 - 18” Replacement cover and inner frame