Optimum Pools 77502 18' Skimmer Panel with 82-3/4" Skim & Return for IG poolThe 18ft skimmer panel is compatiable with the following pool sizes: 12ft round, 18'x26' oval, 18'x30' oval, 18'x34' oval. This skimmer panel can replace a standard 18ft wall panel to add an additional skimmer and return to the pool. This 18ft skimmer panel can replace a 18ft above ground skimmer panel. Specific SP1084 adaptor plates (#77518 & #77519) are required to mount an SP1084 skimmer to the in-ground skimmer panel. Specific (#77168) return fitting kit required for return fitting assembly.