Tier1 Spa Filter Cartridge Replacement for Thermo Spas Healing Spa FL1009 – 2 Pack | Compatible with PTS35, FC-0187, C-4324 | 9-3/4" x 4-5/8" | Trilobal Fabric | Washable & Reusable | High Flow Filter

COMPATIBLE MODELS – Replacement for Thermo Spas FL1009, Thermo Spas Healing Spa, Pleatco PTS35, PTS35-M, PGS25, Filbur FC-0187, Unicel C-4324, PGS25 filtration cartridges

DIMENSIONS FOR RELIABLE FIT – This 9-3/4" x 4-5/8" 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 system? A: Yes, it’s designed as a direct replacement for PTS35, FC-0187, C-4324 | 9-3/4" × 4-3/4" | Trilobal Fabric | Washable & Reusable | High Flow Filter. Q: How does trilobal media improve filtration? A: Its unique fibers capture more fine debris than standard media, helping keep water visibly cleaner. Q: Can the filter be reused? A: Yes, the pleated design withstands multiple cleanings with a garden hose. Q: How long does it last? A: Each cartridge provides dependable filtration for up to 3 months under normal conditions. Q: Why replace even if it looks clean? A: Over time, microscopic oils and debris embed deep in the fibers, reducing efficiency and water flow.