Pentair Pentek GAC-20BB Big Blue Carbon Water Filter, 20-Inch, Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 20" x 4.5", Pack of 4 by Pentek - Used condition

Pentair Pentek GAC-20BB Big Blue Carbon Water Filter, 20-Inch, Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 20" x 4.5", Pack of 4 — Open-Box, 46% Off

Name: Pentair Pentek GAC-20BB Big Blue Carbon Water Filter, 20-Inch, Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 20" x 4.5", Pack of 4
Brand: Pentek
SKU: awhd-us-b0bmfgx9jr
Price: 145.32 USD
Availability: InStock

Brand: Pentek

Condition: Used

$145³²

$269¹¹

-46% Save $123⁷⁹

Updated: 11 days ago

Buy at Amazon.com

Description

CLEANER, BETTER-TASTING WATER - Granular activated carbon effectively reduces chlorine, unwanted taste, and odor for improved water quality throughout your home or facility

MINIMIZED CHANNELING AND CARBON FINES - Internal polypropylene expansion pad prevents water from bypassing the carbon bed, while a spun polypropylene post-filter traps loose fines

NSF/ANSI STANDARD 42 CERTIFIED - Tested and certified by NSF International for material requirements, giving you confidence in the safety and quality of every cartridge

FITS 20" PENTAIR PENTEK BIG BLUE HOUSINGS - Designed as a direct drop-in replacement cartridge (4.50" x 20") for Big Blue filter systems; operates at 40-125 degrees F

25,000-GALLON CHLORINE REDUCTION CAPACITY - Extended filter life at 4 gpm flow rate; this convenient 4-pack keeps your system running with fewer reorder interruptions

Buy at Amazon.com

Sold by

Amazon Warehouse

Verified Retailer

Official Amazon outlet for open-box & returned items

Backed by Amazon's A-to-Z Guarantee
30-day return policy
Ships from Amazon fulfillment centers
Price verified on Amazon

Product Details

SKU:: awhd-us-b0bmfgx9jr
Model:: GAC-20BB
Country:: US
ASIN:: B0BMFGX9JR
GTIN:: 30051678249438

Shopping Smarter

Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?

Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $124 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.

What's the difference between open-box and refurbished?

Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.

Why use OpenBoxFox?

Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for Pentek products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.

Is it safe to buy refurbished?

Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.