Usage Tips: ,Made of high-quality materials, more durable Exquisite and delicate, highly match with the equipment 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. 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+white Material:plastic Size:26.5 x 17.5 x 1.5cm Package Contents: 4 * Ultra-Fine Filters Only 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store