Rainbow/Pentair FC2390 Filter Cartridge

Check the dimensions of your existing cartridge. The FC2390 has an outer diameter of 4 15/16 inches, a length of 13 5/16 inches, and 2 1/8-inch open top and bottom holes. If these measurements match your current filter, it should be a compatible fit.

The antimicrobial treatment helps inhibit the growth of bacteria, mold, and mildew on the filter itself. This not only extends the lifespan of the cartridge but also helps prevent the development of foul odors in your pool or spa water.

Yes, the 100 percent Reemay polyester media is significantly more durable than standard paper filters. It resists tearing and degradation, allowing it to maintain its structural integrity through multiple cleaning cycles.

Unlike filters that use glued-in inserts, the molded-in threads are part of the end cap structure itself. This eliminates the risk of the insert coming loose or stripping, ensuring a secure, leak-free connection to your filtration system.

While cleaning frequency depends on your pool's usage and environmental factors, you should generally rinse the cartridge whenever your system's pressure gauge reads 8-10 PSI above the clean starting pressure. Because this model is designed for easier maintenance, it can typically be cleaned with a standard garden hose spray.