Keep your Robotic Pool Cleaner working efficiently with our Ultra Fine Cartridge Filter Replacement. Improve your pool's water quality with our high-quality Filter Replacement for Robotic Pool Cleaner Parts. Don't let a faulty filter slow down your pool cleaning - 4 x 9991432-R4 pool cartridge 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 Dolphin Robotic Pool Cleaners Nautilus CC Plus filter, M400, M500, M200, M4, M5, Wave 65, Wave 90, C3, C4, Oasis Z5i, Aquarius XL, Liberty, Odyssey, Sigma, Triton Plus(old), Replaces for Maytronics part # 9991432-R4. Please Note: NOT fit for Nautilus CC, M600, E10, E20, S200/300/300i, Escape, Cayman, Proteus 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, Saturn, Advantage, Echo, Encore, Solo, Warrior SE/SI/SL, Mercury, Discovery, 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. The filter can maintain the cleaning performance , while reducing the penetration of dust, and others into the air you breathe. Type:Vacuum Cleaner Accessories Colour:Black Material:Plastic Package Contents: 4 * Pool Cleaner Filter 1 * Cleaning brush (Appearance and color are random and cannot be specified) Only the above package content, other products are not included. Note: Light reflection 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.