Feature:1. PERFECT FIT: Designed for pool cleaner models such as for Dolphin m400 m500 9991432 R4, which ensures a perfect fit between the cartridge and the filter, no need to worry about the compatibility of installation and use.2. ULTRA FINE FILTRATION: It can efficiently filter tiny particles and dust in the water, providing clear and transparent pool water quality, keeping your pool clean and healthy.3. EFFICIENT: After accurate design and manufacture, it can help you keep your pool water clean and let you enjoy a cool and comfortable swimming experience, which saves your time and effort.4. PREMIUM MATERIAL: Made of premium PP,PET and activated carbon material, it has excellent abrasion resistance and durability, and can withstand prolonged use with a long service life.5. EASY TO CLEAN: This pool cleaner filter cartridge is easy to clean and maintain. Users can easily disassemble and clean the filter element to maintain its good filtration effect.Specification:Item Type: Robotic Pool Cleaner Filter CartridgeMaterial: PP, PET, Activated CarbonWeight: Approx. 180g or 6.3ozProduct Size: Approx. 26.4x16cm or 10.4x6.3inApplicable Model: For Dolphin m400 m500 9991432 R4 .Package List:2 xRobotic Pool Cleaner Filter Cartridge