2pack RCX70101 Filter Cartridge Refill Kit Set with UltraFine Cleaning Filters for Hayward and Shark RC9990GR RC9990GAB Underwater Robot Pool Filter This refill kit includes two ultrafine filter cartridges designed for RCX70101 compatible filter systems used in Hayward and Shark underwater pool cleaning robots, specifically RC9990GR and RC9990GAB models. The set restores filtration performance by providing fresh, density filtering media. Key benefits Enhances debris capture with ultrafine filtration to improve water clarity and maintain strong suction from the robot. Replaces worn or clogged cartridges to restore the unit's original filtration efficiency. Designed to fit RCX70101 compatible filter housings, including Hayward and Shark RC9990GR/RC9990GAB units. Durable, quality filtration media built for repeated use in pool environments. Key attributes Functionality: Ultrafine filtering cartridges that help remove small particles from pool water. Compatibility: Compatible with RCX70101 filter cartridges and suitable for Hayward and Shark pool cleaning robots RC9990GR and RC9990GAB. Size/fit: Specifically designed to fit the RCX70101 cartridge slot in the listed robotic pool filters. Material: density filtration media engineered for effective particle capture. Performance: Aims to maintain effective filtration and consistent robot performance between cleanings. What's included 2 replacement filter cartridges (2 Pcs) for RCX70101 compatible systems. Use cases Routine maintenance for Hayward/Shark underwater pool robots: worn cartridges to sustain filtration efficiency and robot suction during regular pool cleaning cycles. Seasonal or postheavy debris periods: Swap to renewal filters after periods of heavy use to preserve water clarity and reduce strain on the robot. Prepping for peak swimming season: Install fresh ultrafine filters to ensure cleaning performance and filtration when pool usage increases. How this helps By restoring filtration capability with fresh ultrafine media, the kit supports clearer pool water and more efficient robot operation without modifying existing equipment. The 2pack provides a convenient, readytouse solution to maintain replacement timing and reduce downtime between cleanings. Note This description reflects the product's stated compatibility with RCX70101 cartridges and Hayward/Shark models RC9990GR and RC9990GAB. For exact fit confirmation, compare your current cartridge model to RCX70101 and the listed compatible robot models.