Usage Tips:Ultra-fine Filters Pool Cleaner Filter 9991432-r4 Pool Filter Compatible Dolphin M400 M500 Ultra-fine Filt-b<br > Exquisite and delicate, highly match with the equipment<br > High-efficiency robotic cleaning filter removes dirt and debris from the swimming pool, such as leaves, dust and diatoms. It makes your swimming pool spotless.<br > Plastic frame, more durable. At the same time it can firmly support the filter layer and prevent it from breaking during operation.<br > Washable and reusable, these filters can last 2-3 years if used properly. Flush the filter every 4-6 weeks for best performance.Compatible with: For Dolphin Nautilus CC Plus, M4,M5,M400, M500, M200 , For Dolphin Triton Plus ,For Dolphin Wave 65 robot pool cleaners.(NOT for Nautilus CC)<br > Colour: White+Black<br > Material: plastic<br > Package Contents:<br > 4 x Ultra-Fine Filters<br > 1 x Cleaning Brush<br > Only the above package content, other products are not included.<br > Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.