9991433-R4 Spring Filter Panels, Part Number: 9991432-R4.Replacement filters work with the following Dolphin Robotic Pool Cleaners: for CC Plus( Not for CC), M400, M500, , Odyssey, Oasis Z5i, Triton Plus (old), XL, C3, C4.It's dimension is 10-1/2inch x 6-3/8inch. design makes the process of replacing filters a breeze, so you and your family can maintain healthy and pure air in every room. A filter will help remove irritants and neutralize odors.Filter canintercept dust,leaves,diatoms,hair, effectively filter to reject secondary pollution The heart of the pool cleaner is the filters. Keep them clean and replace when they are worn or to dirty to clean. filter will improve the cleaning performance of your device:Remove 99.9% of particles including odors, smoke, pet dander, dust, and more down to 0.1 Micrometre in size. Captures finer particles than HEPA H11 (0.3 Micrometre). ABS plastic frame pleated fiber filter,solid and durable,washable and reusable,last for 2-3 years long service life.Please rinse the filter every 4-6 weeks for optimal performance. [Advantages]: 1.The Energy- pool pump does NOT need to run. 2. The robotic pool cleaner scrubs the sides as well as the pool floor.Fine mesh filter,they the fine dirt from the water also. Very easy to clean. 3. The -screen filter cleans up silt, sand, grass trimmings, pet hair, and even pine needles! Colour:black+white Material:ABS Package Contents: 10 x Pool Filter