Gertrude M Dania Beach , FL August 30, 2020 Appliance: Frigidaire Refrigerator FFTR2021QW8A Frigidaire Refrigerator Fftr2021qw8a: Needed a new cardboard piece for the back of the refrigerator (#89). How to replace Access Cover. I had to make a few different holes in the cardboard but it worked great! 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes