LABLANC 4pcs Pool Robot Filters, Spring Filter Cartridges, Dolphin M400/M500 Filter, Ultra-Fine Filters Compatible with Dolphin Nautilus cc Plus, for Pleated

Good Compatibility: The replacement ultra-fine cartridge filter panels are perfectly compatible for CC Plus, for M400, for M500, for Z5i, for Triton Plus (old), for XL, for C3, for C4. Premium Material: The ABS plastic frame is stronger and more durable. The part number is 9991432 R4. A good modification part for the pool cleaner. Efficient Filtration: This pool cleaning filter removes dirt and pool debris such as leaves, hair, dust, and diatoms, etc. Keeps Your Pool Clean: Replacement filters for robotic pool cleaners keep your pool spotless and maintain your pool's cleanliness at its best. Lifespan: The Premium Ultrafine Filter lasts 2-3 years. Please rinse the filter every 4-6 weeks for optimal performance.