Inline Post-Carbon Polishing Filter (2” × 6”) – Compatible with Culligan AC-30, AC-15 & LC-50 RO Systems

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Designed to fit select Culligan reverse osmosis systems, including the AC-30, AC-15, and LC-50. Installed as the final stage of filtration, it polishes RO water before dispensing, improving taste and odor. This filter is commonly referred to as the post-carbon or polisher filter and is responsible for giving RO water a clean, neutral taste at the faucet. What It Improves Final taste and odor of RO water Removes any remaining carbon fines Polishes water after RO membrane filtration Why the Post-Polishing Filter Matters After water passes through the RO membrane, a post-carbon filter: Enhances overall taste and drinking quality Ensures consistent, clean output at the faucet Acts as the final quality control stage in the system This stage does not affect TDS reduction, but it plays a key role in how the water tastes. System Compatibility This inline post-carbon filter is compatible with Culligan RO systems that use a 2" × 5" inline post filter, including: Culligan AC-30 Culligan AC-15 Culligan LC-50 Compatibility Notice:This is a compatible replacement filter manufactured by LiquaGen. It is not an OEM product and is not manufactured, endorsed, or affiliated with Culligan. Specifications Filter Type: Inline post-carbon polishing filter Size: 2" × 6" Filtration Stage: Final stage (post-carbon) Inlet Size - 3/8" Push Connect Application: Reverse osmosis systems Function: Taste and odor improvement Recommended Replacement: Every 12 months or as needed When to Replace Replace once per year Replace sooner if taste or odor changes are noticed Regular replacement ensures consistent water quality and taste. Why Choose This Filter Designed to match original Culligan post-filter dimensions Improves drinking water taste without affecting flow Simple inline installation with standard quick-connect fittings Show more