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APEC Water Systems 20 in. Big Blue Whole House Water Filter Housing 1 in. Inlet/Outlet HBB-20 - The Home Depot
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Pentek 166201, 20" Big Clear Filter Housing with 1" Ports and Pressure Release (Accepts 20" x 4.5" Cartridges) – H2O Distributors
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Amazon.com: Pentair Pentek EP-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 20" x 4.5", 5 Micron, Pack of 4: Tools
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Amazon.com: Pentek 150233, Big Blue, 1" In/Out, 20 Blue/Black, HFPP, w/PR (2-(Pack)) : Industrial & Scientific
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Captain O-Ring - 151122 Orings Compatible with Pentek Big Blue Water Filters OEM Size Buna-N 3 Pack - Walmart.com
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