1. Type D replacement cartridge for pool filters 2. High Quality Filter Cartridge: Keep your pool water crystal clear and optimize your swimming pool pump performance with the Type D filter cartridge. 3. Powerful Filtration Performance: Innovative "Dirt-Locking" technology enables the fabric to trap more contaminants than standard filter fabric. This filter effectively removes hair, leaves, dust, sediment, sand, and other debris. Enjoy clean and clear water in your pool and spa. 4. Easy to Clean: Uniform high-performance trilobal fabric allows for efficient capture and release of debris, making it easy to rinse and clean the filter. It is recommended to replace the cartridge every 2 weeks to maintain optimal spa performance. 5. Committed to delivering advanced technologies and products that provide superior water filtration for the health, safety, and enjoyment of pool and spa owners. Intex Type D dimensions: Length: 3.75", Outside Diameter: 4.13", Top: 2" open, Bottom: 2" open Compatible with: POOLPURE filter systems for pool and spa cleaning Compatible with Summer Waves, Summer Escapes, and Intex Type D filters Fits canister models: SFS-350, RP-350, RP-400, RP-600, RX-600, SFS-600 Note: All manufacturers' names and part numbers are the property of their respective owners and are used for compatibility purposes only.