Keep your robotic pool cleaner working efficiently with our ultra-fine filter replacement. Improve water quality with this high-quality filter replacement designed for compatible robotic pool cleaner models. Prevent poor filtration from affecting your pool cleaning performance. This package includes 4 x 9991432-R4 pool filter replacements. Rinse the filter every 3 to 5 weeks to maintain optimal performance. With proper care and regular cleaning, the filter can last up to 4 years. Compatible with Dolphin robotic pool cleaners including CC Plus, M400, M500, M200, M5, Wave 65, Wave 90, C3, C4, Oasis Z5i, XL, Liberty, Odyssey, Triton Plus (old). Replaces part number 9991432-R4. Note: Not compatible with CC, M600, E10, E20, S200/300/300i, Escape, DX3, DX4, DX5i, S50, S100, Active 10, 15, T15, T25, 20/30/30i, T35/45/55i, Prowler 910, 917, 920/930, Triton PS/PS Plus, Advantage, Encore, Solo, Warrior SE/SI/SL, Mercury, Quantum, Premium, 9991463-R4, 9991468-R4. Made from high-strength, environmentally friendly materials that capture particles as small as 0.3 micrometers. Helps maintain cleaning efficiency while reducing the passage of dust and debris. Type: Vacuum cleaner accessories. Color: Black. Material: Plastic. Package contents: 4 x Pool cleaner filters, 1 x Cleaning brush (appearance and color may vary). The package includes only the items listed. Product color may appear slightly different in images due to lighting and monitor settings. Measurement may vary by +/- 1-3 cm.