Baleen Filters AK-60431 105 sq. ft. Pool and Spa Filter Cartridges, Replacement for Unicel C-7471, Pleatco PCC105, Filbur FC-1977 Equivalent to Filbur -FC-1977 Equivalent to Pleatco -PCC105 Equivalent to Unicel C-7471 Equivalent to Filbur-FC-1977 Equivalent to Pleatco-PCC105 Equivalent to Unicel C-7471