Dean R Lakeland , FL July 05, 2021 Appliance: LG Refrigerator LFX28968ST/03 Lg Refrigerator Lfx28968st/03: Sweat on the mullion between the doors on my LG three door refrigerator. How to replace Refrigerator Flipper Assembly. I ordered the part from Appliance Parts Pros and installed it in about 5 minutes and the problem is now resolved. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes