4pcs Ultra-fine Filters Pool Cleaner Filter 9991432-R4 Compatible With Dolphin M400 M500 Highly efficient robotic pool cleaner filter designed to remove dirt, debris, leaves, dust, and diatoms from swimming pools. Helps keep your pool water clean and clear. Durable plastic frame provides strong support for the filter layer and enhances longevity. Washable and reusable; can last 2–3 years with proper care. For optimal performance, rinse the filter every 4–6 weeks. Compatible with: Dolphin Nautilus CC Plus, M4, M5, M400, M500, M200, Triton Plus, and Wave 65 robot pool cleaners. Not compatible with Nautilus CC. Equivalent to model 9991432-R4. Color: Black and White Material: Plastic Size: 26.5 x 17.5 x 1.5 cm Package Includes: 4 x Ultra-fine Filters Note: Image colors may vary slightly due to lighting and screen settings. Size may vary by ±1–3 cm due to manual measurement.