We designed Jandy Cartridge filters with the pool builder, service company and homeowner in mind. We offer many user-friendly features to aid with installation and maintenance. Rubberized tank handles make installation and cleaning easy. Standard unions and inlet/outlet plumbing allow easy hook-up. The Clean/Dirty indicator gauge can be customized for each pool and lets the homeowner know when it is time to clean the filter. Handles on the cartridges allow you to pull out the entire unit and clean with just one step. A variety of filter sizes are available. The larger the filter, the longer you can wait to clean. Each CL Series filter also includes safety features, such as heavier tank wall thickness, a strong and durable band clamp, and a continuous automatic internal air relief system.