Renae K Victoria , MN June 11, 2017 Appliance: Frigidaire Side By Side Refrigerator FRS26ZNHB1 Frigidaire Refrigerator Frs26znhb1: Needed to replace water filter. How to replace Frigidaire Puresource Plus Wfcb Refrigerator Water Filter 2 Pack. Unscrewed the cover, pulled old filter, inserted new one, and then replaced the cover. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes