Membrane Solutions Hot Tub Filter Cartridge – Replaces Pleatco PWW50L, Unicel 4CH-949, Filbur FC-0172, SD-01143 (2-Pack)

NSF/ANSI 50 Certified Replacement Hot Tub & Spa Filter — 50 sq ft Trilobal Cartridge

Certification & Reliability - NSF/ANSI 50 certified by IAPMO, guaranteeing premium materials and tested safety for hot tub and spa use. Enjoy elevated water quality and peace of mind with a certified replacement filter.

Key Specifications - Length: 13 3/16"
- Outside Diameter: 5"
- Top: Handle
- Bottom Hole: 2" female SAE thread
- Filtration Area: 50 sq. ft.
- Filter Material: Trilobal filtration fabric
- Important: Verify dimensions and thread type before purchase to ensure proper fit for your spa or inflatable hot tub.

Wide Compatibility - Compatible replacement for a broad range of OEM filters, including: - Pleatco PWW50L, FIL50-5D13H15FCT-3 - Unicel 4CH-949, Unicel 4CH-926 - Filbur FIL11100208, FC-0172 - SD-01143, 817-4050 - Baleen AK-90091, Magnum O250 - Darlly 42522, Excel Filters XLS-479 - Manufacturer names and part numbers listed for reference; this product is a compatible replacement to help you find the correct model quickly.

Advanced Filtration Performance - Trilobal filtration fabric increases surface area for superior debris capture without causing excessive pressure drop.
- Effectively captures hair, leaves, dust, sediment, sand and fine particles to keep spa water clear, fresh and safe for relaxation.

Durable, Chlorine-Resistant Construction - Chlorine-resistant end caps and reinforced center support provide reliable durability in chemically treated water.
- Engineered for consistent high-flow performance and long-term structural stability.

Reusable and Cost-Saving Maintenance - Designed for easy maintenance and repeated use: simply rinse the cartridge every 2–3 weeks for optimal performance.
- Reusable design reduces replacement frequency and lowers long-term operating costs.

Why Choose This Filter - Certified safety and material quality (NSF/ANSI 50)
- High-efficiency trilobal filtration for clearer water
- Robust, chlorine-resistant construction for extended life
- Broad compatibility as a reliable replacement option

Fit Reminder - Measure your current filter (length, diameter, thread type) and compare specifications before ordering. Selecting the correct model ensures proper fit and peak filtration performance.