COMPATIBLE MODELS – Replacement for Unicel 4CH-22, Freeflow Lagas FF-150, CLX, TLX, RLX, Pleatco PFF25P4, PFF25, Filbur FC-2399, 303263, 78459, SAC006, PLF4CH-22, 17-175-1960, SD-00205 filtration cartridges. DIMENSIONS FOR RELIABLE FIT – This 6-5/8" x 4-15/16" cartridge is engineered to fit seamlessly into compatible spa filtration systems, supporting consistent performance without leaks or gaps. TRILOBAL DIRT-LOCK MEDIA – Advanced trilobal fibers capture up to 40% more debris than standard round fibers, trapping dirt, hair, leaves, and fine particles while maintaining maximum water flow. TESTED TO NSF 50 STANDARDS – Independently tested to NSF protocols for performance and durability, supporting consistent water clarity and reliable filtration. ENGINEERED FOR CONSISTENT FLOW – Internal high-flow core delivers steady water circulation, protecting pump performance without restricting pressure or causing heater issues like some filters. Q: Will this filter fit my spa? A: Yes, it is a direct replacement compatible with 4CH-22, PFF25P4, FC-2399
6-5/8" × 4-5/8"
Trilobal Fabric
Washable & Reusable
High Flow Filter. Q: How does trilobal fabric improve filtration? A: The trilobal fibers capture more fine debris, oils, and contaminants than standard fibers. Q: Is this filter washable and reusable? A: Yes, simply rinse with a garden hose to extend service life and maintain flow. Q: How often should I replace it? A: Typically every 2–3 months depending on usage and water conditions. Q: Why replace even if it looks clean? A: Over time, microscopic debris embeds in the fibers, reducing efficiency and clarity.