Product Description Please note: Due to lighting and monitor settings, there may be slight color differences between the actual product and the picture. This does not affect the use of the product. Thank you. [Compatibility] The 9991467-R4 ultrafine filter is compatible with the following Dolphin pool cleaners: Active 20, Active 30, Active 30i, Active 40, Active 60, Advantage Ultra, Discovery (new model), Explorer E30, Explorer E50, Explorer E70, M600, Mercury, Premium, Proteus DX4, Proteus DX5i, Prowler 920, Prowler 930, Prowler 930W, Quantum, S200, S300, S300i, S400, T35, T45, T55i, Triton PS, Triton PS Plus, Warrior SE, Warrior SI. 【OEM】9991467-R4 Ultra-fine Filter Cartridge is robust and durable, not easily deformed or broken. 【Easy to Clean】The pool cleaner filter cartridge is easy to remove and can be rinsed directly with a garden hose for quick dirt removal. The cartridge is reusable. 【High-Efficiency Filtration】The pleated filter design effectively captures dirt and debris from the pool bottom, improving cleaning performance. 【Easy Installation】Replacing the filter cartridge is simple and quick. Each filter cartridge panel is numbered. It is recommended to disassemble the cartridges in order from 1 to 4 and install them in order from 4 to 1 for easy replacement. Color: As shown in the picture. Material: Plastic. Package Contents: 1 set x Ultra-fine Filter Cartridge. Note: Measurement error is +/- 1-3 cm. The package only includes the items listed above; other products are not included.