[Microfiltration] Filter cartridges are designed to trap only large debris and allow fine debris to pass through to prevent the cartridges from clogging as quickly when the pool is particularly dirty [Multi-version compatible use] Perfect filter for Dolphin robotic pool cleaners: S50 Active 10 , part number: 9991460-R1. [] Plastic frame, more robust and . It firmly supports the filter layer and prevents it from breaking during work. Same as model number 9991460-R1. [REDMIND INSTALLATION] If used correctly, ultra-fine filters can last 2 to 3 years. Please rinse the filter every 4-6 weeks for optimal performance Please note: The physical color difference or difference does not affect the use, please don't worry, ! Material: plastic color: as shown Package Contents: 1 x Ultra Fine Filter Basket Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The