Compatible with the following models: Pleatco PWW50L, Unicel 4CH-949, Filbur FC-0172, SD-01143, 817-4050, PDC570-AFS, Rising Dragon 50, Baleen AK-90091, Magnum O250, Darlly 42522. This product is not sponsored, endorsed by, or affiliated with the manufacturers of the compatible models, including Pleatco, Unicel, Filbur, Waterway, Rising Dragon, Waterway Teleweir, Baleen, Magnum, or Darlly. Constructed with high-quality materials, this spa filter features a heavy-duty polyester media designed for extended service life compared to lower-grade alternatives. The filter cartridge includes multiple pleats to enhance dirt-holding capacity and improve filtration performance. A triple-laminated poly inner scrim is combined with a premium weather-resistant top coating to maintain pleat integrity, resist tearing, and ensure consistent spacing. Designed for efficient operation, this filter cartridge helps maintain lower system pressure and supports higher flow rates. This reduces strain on the pump and may contribute to lower energy consumption, promoting longer equipment life. Dimensions: 378mm x 125mm (approximately 14.9 inches x 4.9 inches) with a 2-inch female SAE threaded port. Provides 50 square feet of effective filtration area. The media density of approximately 5 ounces per square yard enhances particle capture efficiency. Color: White Material: Plastic Package Contents: 2 x Spa Filter Cartridge Note: The product color may vary slightly due to lighting conditions and screen display settings. Measurement tolerances may vary by ±1–3 cm.