Compatible with the following components: for Pleatco PWW50L, Unicel 4CH-949, Filbur FC-0172, SD-01143, 817-4050, PDC570-AFS, Rising Dragon 50, Baleen AK-90091, Magnum O250, Darlly 42522. The part / product will not sponsored, endorsed or affiliated with the brands to which it goes, including for Pleatco, Unicel, Filbur, Waterway, Rising Dragon, Teleweir, Baleen, Magnum and Darlly. The filter is made of material. More cartridge pleats mean improved filter capacity.With 2inch Female SAE Threaded and 50 Square Foot Spa Filter Cartridge.(About 5 ounces per square yard means more fibers per unit of area for better dirt trapping power). The filter material Trilobal Fabric Structure makes it easy to release impurities when cleaning the filter, the filter is like after cleaning. It is recommended that you clean the cartridges every 2 weeks to maximize your spa performance. Innovative "Dirt-Locking" technology makes the fabric much more contaminated than conventional fabric. This filter efficiently removes hair, leaves, dust, debris, sand, etc. Enjoy clean free time in your spa and tub. Unique trilobal filtration structure makes it easier to collect large quantities of intermediate parts. It's also easy to wash / clean to upgrade the filter.It is recommended that the cartridges be cleaned every 2 weeks to keep your spa performing. colour: blue Material: plastic Size: 125x378mm Package Contents: 1 x Spa Filter