1. Replacement Ultrafine Filter Basket for Dolphin Robotic Pool Cleaner, Compatible with S50, S100, Active 10, Active 15, Echo 2. High-quality microfiltration technology to keep your pool clean all the time. 3. For best performance, rinse and clean every 4-6 weeks. 4. Please note - if you have an older ACTIVE 10 or S50, you will need to remove the plastic parts in the robot so that the filter basket can be installed correctly and the door can be closed. 5. Material: ABS+composite
