9991433-R4 Spring Cartridge Filter Panels, Maytronics Part Number: 9991432-R4. Replacement filters compatible with the following Dolphin Robotic Pool Cleaners: Nautilus CC Plus (not for Nautilus CC), M400, M500, Sigma, Odyssey, Oasis Z5i, Triton Plus (old), Aquarius XL, C3, C4. Dimensions: 10-1/2 inches x 6-3/8 inches. Lightweight design allows for easy filter replacement. Helps capture dust, leaves, diatoms, hair, and fine debris to prevent secondary pollution. Maintains optimal cleaning performance by removing contaminants from pool water. The filter features an ABS plastic frame with pleated fiber media, offering durability and reusability. Washable and reusable design provides up to 2-3 years of service life with proper maintenance. Rinse the filter every 4-6 weeks to ensure peak performance. Fine mesh construction effectively traps silt, sand, grass clippings, pet hair, pine needles, and other small particles. The micro-screen filtration helps maintain clean and clear pool water. Color: Black + White Material: Plastic Package Contents: 8 x Pool Filters Note: Lighting and display settings may cause slight color variations between the image and the actual product. Measurement may vary by +/- 1-3 cm.