Keep your Robotic Pool Cleaner working efficiently with our Ultra Fine Filter Replacement. Improve your water quality with our high-quality Filter Replacement for Robotic Pool Cleaner Parts. Don't let a faulty filter your pool cleaning - 4 x 9991432-R4 pool filter replacement - Please rinse the filter every 3-5 weeks for best performance. Timely cleaning and correct use the fiter can last 4 years. The perfect Filter Replacement for Robotic Pool Cleaners CC Plus filter, M400, M500, M200, , M5, Wave 65, Wave 90, C3, C4, Z5i, XL, Liberty, , , Triton Plus(old), Replaces for part # 9991432-R4. Please Note: NOT fit for 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 and Premium, 9991463-R4, 9991468-R4 Made of high-strength environmental-friendly materials, which can block most of dust down to 0.3 micrometer.