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Purcooflow WHF2045B303 Replacement Filter Set - 20" x 4.5", 3-Stage Filtration for Sediment, Chlorine, PFAS
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3-Stage Protection Against Sediment, Chlorine, Chemicals & PFAS: Combines a 5-micron PP sediment filter, premium CTO carbon block, and specialized CTO⁺ media to reduce rust, chlorine, VOCs, and harmful “Forever Chemicals” PFAS in one complete filtration system.
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Stage 1 Sediment Filtration Protects Your Water & Filters: Removes sand, rust, dirt, and fine particles down to 5 microns while helping shield downstream carbon filters for longer-lasting performance.
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Dual Carbon Block Filtration for Stronger Chemical Reduction: The CTO + CTO⁺ dual-carbon design increases water-to-media contact time to improve reduction of chlorine, PFAS, pesticides, herbicides, industrial solvents, and unwanted chemical contaminants.
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Universal 20" Filter Compatibility: Compatible with most standard 20" x 4.5" filter cartridges, including sediment and carbon filters—giving you flexible replacement options without being locked into proprietary filters.
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Built for Homes Demanding Higher Water Safety: Designed for families concerned about modern groundwater contaminants, this is our most advanced 20-inch filtration set for broad-spectrum protection and cleaner, safer water.
- Free Shipping On all orders
- 30-Day Return No worries
- 2 Year Warranty Hassle-free
Tech Specs - PFAS Filter Set
20" x 4.5" Big Blue
Fits Most Standard 20" BB Housings
Certified High-Efficiency Media
Up To 95%
Up To 15 GPM
Up To 100,000 Gallons
PFAS Reduction Media + Activated Carbon
Food-Grade PP / EPDM
90 PSI
104°F (40°C)
Compatible with Most 20" × 4.5" Big Blue Housings
Designed to fit most standard 20" × 4.5" Big Blue filter housings used in whole-house water filtration systems. Easy replacement, dependable performance, and broad compatibility.