4pcs Ultra-fine Filters Pool Cleaner Filter 9991432-r4 Pool Filter Compatible With Dolphin M400 M500 Ultra-fineExquisite and delicate, highly match with the equipmentHigh-efficiency robotic cleaning filter removes dirt and debris from the swimming pool, such as leaves, dust and diatoms. It makes your swimming pool spotless.plastic frame, more durable. At the same time it can firmly support the filter layer and prevent it from breaking during operation.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)The same as the model 9991432-R4.Colour:Black+whiteMaterial:plasticSize:26.5 x 17.5 x 1.5cmPackage Contents:4 * Ultra-Fine FiltersOnly the above package content, other products are not included.Note: Light reflection 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.