Tier1 Replacement for Waterway Clearwater 30 Pool Filter Cartridge | Compatible with Unicel C-6330, Pleatco PWK30, Filbur FC-3915 | 10-1/2" x 6" | Trilobal Fabric | Washable Cartridge

COMPATIBLE MODELS – Replacement for Watkins 31489, Filbur FC-3915, Unicel C-6330, C-6430, C-6430RA, Pleatco PWK30, PWK30-M, PWK30-4, SD-00328, 71825, 73178, 73250, P/N0969601, PDC510-AFS, SD-00704, CCP389 filtration cartridges

DIMENSIONS FOR RELIABLE FIT – This 10-1/2" x 6" cartridge is engineered to fit seamlessly into compatible pool 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 31489, FC-3915, C-6330. 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.