Pentek GAC-Bb Granular Activated Carbon Whole House Water Filter Cartridge, 10" X 4.5" (item #155153-43)
Upgrade your whole house filtration system with the Pentek GAC-BB replacement cartridge (Item #155153-43), a granular activated carbon (GAC) filter designed for 10" Big Blue and other 10" heavy duty filter housings. Built for medium households (2–4 occupants), this cartridge is engineered to reduce chlorine taste and odor and general bad taste and odor, delivering noticeably cleaner, better-tasting water at every tap.
The GAC-BB uses a radial-flow design that channels water through the full length of the carbon bed, maximizing water-to-carbon contact time for more effective adsorption. An internal expansion pad minimizes channeling and bypass, while a permanently fastened post-filter reduces carbon fines and suspended particles before water exits the cartridge — so you get consistent filtration without extra fine sediment in your water.
Rated for a flow rate of 2 GPM and a total capacity of approximately 12,000–12,500 gallons, the GAC-BB is recommended for replacement every three months or sooner if you notice a drop in water pressure or filtered water quality. It's a direct-fit replacement for any standard 10" x 4.5" carbon filter cartridge, making it a simple, drop-in upgrade for existing housings. Filter media is NSF International tested and certified for reliable, consistent performance.
Key Specs:
- Item #: 155153-43 (GAC-BB)
- Media: Granular Activated Carbon (GAC)
- Dimensions: 10" x 4.5"
- Flow Rate: 2 GPM
- Capacity: ~12,000–12,500 gallons
- Application: Medium household (2–4 occupants)
- Certification: NSF International tested & certified
- Available Pack Sizes: 1-pack, 2-pack, 8-pack
