9991433-R4 Spring Filter Panels, Part Number: 9991432-R4. Replacement filters compatible with the following Dolphin Robotic Pool Cleaners: CC Plus (not for CC), M400, M500, Odyssey, Oasis Z5i, Triton Plus (old), XL, C3, C4. Its dimension is 10-1/2 inch x 6-3/8 inch. The design makes replacing filters easy, allowing you to maintain clean water in your pool. A fresh filter helps remove impurities and reduce odors. The filter can capture dust, leaves, hair, and other particles, effectively reducing secondary pollution. The heart of the pool cleaner is the filter. Keep them clean and replace when worn or too dirty to clean. The 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, durable, washable and reusable, lasts for 2-3 years. Please rinse the filter every 4-6 weeks for optimal performance. [Advantages]: 1. The energy-efficient robotic pool cleaner does NOT require the pool pump to run. 2. The robotic pool cleaner scrubs the sides as well as the pool floor. Fine mesh filter picks up fine dirt from the water. Very easy to clean. 3. The micro-screen filter cleans up silt, sand, grass trimmings, pet hair, and even pine needles! Color: black + white. Material: Plastic. Package Contents: 8 x pool filters. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause slight color differences between the image and the actual item. Measurement may vary by +/- 1-3cm.