[Part Number] Compatible with following: 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 is not sponsored or endorsed by,or affiliated with the brands it fit,including Pleatco, Unicel, Filbur, Waterway, Rising Dragon, Waterway Teleweir, Baleen, Magnum, Darlly. [High quality] The filter made of high quality material.The heavy-duty polyester makes the cartridge capable of lasting longer than cheaper alternatives. [Powerful Filtering Ability] More cartridge pleats mean improved filtering capacity.Triple laminated poly-constructed inner scrim is topped by a premium weather resistant top coating,Break resistant keeping the pleats crisp, clearly defined and evenly separated. [Our Advantage] Spa filter can deliver lower pressure and higher flow rates, creates less wear and tear on the pump,moreover while using less energy than other filter cartridges ,so it ensures a longer life of the product. [Size] (378mmx125mm) 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) . Colour: white Material: plastic Package Contents: 2 * Spa Filter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.