Tier1 PAS-1581 Replacement Pool and Spa Filter fits systems that use 5 7/8-inch diameter by 10 1/2-inch length filters. Tier1 Pool and Spa filters will protect your investment engineered to outperform the competition and exceed your expectations. Featuring high durability filter fabric that maintains strength even when loaded with sediment, a tighter porosity and denser weave to capture more contaminants in less time, and a high strength, high flow core designed to support the filter while providing industry leading flow rates. Tier1 Pool and Spa filters will clean your water faster and more efficiently with less wear and tear on your pump. Dive in with Tier1, the water's great!
- PRECISION FIT FOR 31489 – Compatible with 31489, FC-3915, C-6330, C-6430, C-6430RA with a snug and secure fit to ensure quality performance.
- DIMENSIONS FOR RELIABLE FIT – This 9.25" x 7.13" 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.
- QUICK RINSE, LONG-LASTING FILTRATION – Engineered pleats resist collapse and wash clean easily, with this 100 sq ft cartridge providing extended clarity and reliable flow for your system.
- PRECISION FIT FOR 31489 – Compatible with 31489, FC-3915, C-6330, C-6430, C-6430RA with a snug and secure fit to ensure quality performance.
- DIMENSIONS FOR RELIABLE FIT – This 9.25" x 7.13" 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.
- QUICK RINSE, LONG-LASTING FILTRATION – Engineered pleats resist collapse and wash clean easily, with this 100 sq ft cartridge providing extended clarity and reliable flow for your system.
