Features: 1HIGH EFFICIENCY: Designed with 3 thick layers of pool and spa filters to wick away as much debris, dirt and particulates as possible, efficient and reliable. 2APPLICABLE MODEL: This replacement filter cartridge is compatible for TigerShark, for SharkVac and for AquaVac robotic pool and tub cleaning robots. 3EASY TO CLEAN: The filter cartridge panel is reusable, can be cleaned after each use, it is recommended to replace the filter cartridge every 1?2 months. 4DURABLE MATERIAL: Made of wear resistant plastic frame and thick filter material, this filter cartridge is designed for heavy duty construction, has a long service life. 52PCS IN 1 SET: Including 2pcs pool cleaner filter cartridges, can directly replace old or damaged filter cartridges, and reduce pool maintenance cost. Package included: 2 x Filter Cartridge