Refresh your spa routine with Malaka FD2002 replacement filter cartridges, built to fit hot tubs that use PRB35-IN housings. This 2-pack delivers dependable filtration, helping water feel clear and comfortable after a soak without demanding a full system overhaul. Designed for real-world use, these cartridges measure 9-1/4\" in length (23.5 cm) with a 4-15/16\" outer diameter (12.5 cm). The top and bottom openings are 2-1/8\" (5.4 cm), ensuring a secure seal in compatible filter frames. Each pack includes two cartridges, so you’re ready for routine changes without extra trips to the store. Key specs Length: 9-1/4\" (23.5 cm) Outer diameter: 4-15/16\" (12.5 cm) Inner diameter — top: 2-1/8\" (5.4 cm) Inner diameter — bottom: 2-1/8\" (5.4 cm) Includes: 2 filter cartridges Real-world filtration in action In everyday spa use, Malaka FD2002 cartridges are designed to support steady water flow while capturing visible particulates. The pleated media offers a larger filtration surface, which can help maintain comfortable water feel and easier maintenance between cleanings. PRB35-IN compatibility ensures a straightforward fit for select spa models Pleated filtration media increases surface area for sustained flow Durable construction supports regular spa sessions and weekend gatherings Easy installation with a snug, secure seal to minimize bypass Usage tips and care For best results, rinse the cartridges under clean water before installation to remove loose debris. Verify proper seating in your housing and follow your spa model’s replacement schedule. Malaka focuses on practical, dependable filtration solutions that fit your needs. FAQ Q: Is the Malaka FD2002 cartridge compatible with PRB35-IN filters? A: Yes—it's designed for PRB35-IN compatible housings and ships as a 2-pack. Q: What does the package include and what are the cartridge dimensions? A: The package includes two FD2002 cartridges; each measures 9.25" long with a 4.937" outer diameter.