【Compatible with type D filters】Size: 3.75X4.13 inch. Replaces Intex Type D filter cartridge and fits any filter pump that uses Intex 59900 filter cartridges. This cartridge is compatible for use with SFS-350, RP-350, RP-400, RP-600, RX-600 pump models. 【High Quality Filter Cartridge】 Keep your pool water crystal clear and give your swimming pool pump its best performance with the filter Cartridge Type D. 【Powerful Filtration Performance】 Innovated "Dirt-Locking" technology make the fabric traps much more contaminants than regular fabric. This filter efficiently removes hair, leaves, dust, sediment, sand, etc. Enjoy clean leisure time in your pool and spa. 【Easy To Clean】Uniformity and high-performance trilobal fabric make it easier to capture and release stains, so it’s easy for you to wash the filter after use. It is recommended that you replace cartridges every 2 weeks to maximize your spa's performance. 【Durable & Cost-Effective】Featuring a unique Trilobal Filtration Fabric Structure, our filter excels in capturing a large volume of contaminants. It's also designed for easy cleaning and maintenance. We're dedicated to offering top-notch quality at an affordable price. 【PHTA MEMBER – INDUSTRY-TRUSTED PERFORMANCE】 As a proud member of the Pool & Hot Tub Alliance, PoolPure follows industry-recognized filtration standards to deliver superior performance, longer lifespan, and consistently crystal-clear water—so you can buy with confidence.