Pleatco - PBW4PAIR. Relax Spa Pool and Spa filter are made from an advanced Fabric. The enlarged filtration area improves dirt holding capacity without compromising the flow rate and giving an enhanced service life. This Filter Cartridge is a suitable replacement for the Pleatco PBW4PAIR and Bestway, Intex Sand N Sun, Wal Mart Simple Set, Aqua Leisure
