Wide Application: Compatible with 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 confirm whether your model is applicable before purchasing. 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. Premium Quality: Make with Heavy-duty ABS Plastic Frame and Super-Fine Pet Filter Paper with pleated, firmly supports the filter layer and prevents it from breaking during operation. Not easily deformed when pool water flows through, providing maximum hydraulic efficiency and overall structural stability. High Efficiency Filtration: With clever pleats, traps sand, leaves, hair, debris better than normal fabrics for maximum filtration efficiency, keeping your pool crystal clear. Maintenance Performance: Please rinse the filter every 4-6 weeks for optimal performance. Timely cleaning and correct use the fiter can last 2-3 years. Simple installation: Soak climbing ring thoroughly in water until they expanded and softened enough to install on rollers. Slide them in slowly and ensure that they are sitting in their designated space. Colour:Black & White Material:Plastic Package Contents: 4 * Pool Cleaner filter 4 * Pool Cleaner Climbing Ring 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.