Pool / Spa Filter Unicel 6CH-959 compatible with replacement filter Filbur FC-2715, Pleatco PJP60-F2S, Darlly SC731.
Length 17 1/2″, Diameter 5 7/8″, Top Handle, Bottom 2″ SAE Threaded. The top of the cartridge open and the bottom with thread of screw type 1-1/2 SAE.