GAC and Carbon Block Replacement Water Filters.
Pentek CEP-10EBB # 155789 Replacement Water Filter. 10" x 4 1/2" Big Blue Powdered Activated Carbon Briqutte with Acid-Washed Coconut Carbon. Taste/Odor/Sediment Water Filter Cartridge
Pentek # 151122 Replacement O-Ring For Big Blue Water Filter Housing - Big Blue O-ring Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. O-Ring For Big Blue Water Filter Housing. Buna-N FDA Grade. (Big Blue Housings Use A 5 3/4" diameter "O" Ring) Ametek # 151122 Same as Culligan OR-100 for HD-950.