Marilynn B Lansing , MI December 25, 2014 Appliance: Frigidaire Refrigerator FRT15HB3DQ6 Frigidaire Refrigerator Frt15hb3dq6: I wanted to replace the half shelf in my top freezer compartment with a full length shelf. How to replace Protector Cap. It was really easy. I found the part number using an online search, ordered the shelf and just inserted the ends into the holes in the freezer walls. Fortunately, I read on a question and answer forum that four end caps were also required. This detail was not listed in the shelf description so knowing this, I was able to order the caps along with the shelf and avoid having to place a second order once I got the shelf and discovered that I needed the end caps. 7 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes