Ultra-Fine Pool Filter for Dolphin M4/M5/M400/M500 Robot Cleaner, Washable & Reusable (4 Filters + Brush) Ultra-fine filter for pool cleaner, compatible with Dolphin M400, M500, M4, M5, and other selected models Precisely designed to fit seamlessly with compatible robotic cleaners High-efficiency filter captures dirt, debris, leaves, dust, and diatoms to help keep your pool water clean Durable plastic frame provides strong support and prevents damage during operation Washable and reusable – lasts up to 2–3 years with proper care. Rinse every 4–6 weeks for optimal performance Compatible with: Dolphin Nautilus CC Plus, M4, M5, M400, M500, M200, Triton Plus, Wave 65 Color: White + Black Material: Plastic Package Contents: 4 x Ultra-Fine Filters 1 x Cleaning Brush Note: Light and display settings may cause slight color variations. Measurement may vary by +/- 1–3 cm.