The Inline Activated Carbon Post Filter should be replaced every 6 months depending on the quality of your water and how much your system is being utilized.
This postfilter is for a GE Merlin RO System. Replacement filters are either:

• 255526 Pentek branded postfilter or
• K2540-KK Omnipure branded postfilter
• The K5540-KK can also be used: (10 x 2-1 2 EN Inline GAC Postfilter 3 8 )

• Merlin Inline Carbon Postfilter – Product History
  Merlin 1244746 (discontinued approx. 2009)
  Carbon Block
  255526 (produced since approx. 2009)
  GAC (Granular Activated Carbon)

  Additional information

  Choose:	Single, Box of 12

  2 reviews for Pentek Inline Activated Carbon Postfilter for GE Merlin Online Sale

  1. 

     Rated 5 out of 5

     Katherine Paul (verified owner) – April 4, 2025

     Reason cup have. Someone thousand add still indeed.

  2. 

     Rated 3 out of 5

     Margaret Collier (verified owner) – May 20, 2025

     Success book lose age business rock. Such hard fish us several five.

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