The Watts WQCGAC11 Kwik-Change GAC Carbon Postfilter is a 1/4 turn quick change replacement filter for the WQC4RO11-50 RO system. Changing the filter is quick and easy, requiring no tools. It is recommended that you replace this filter every 12 months. Filter packs are available as well if you need to change all of your filters.

Twist to remove.