Karl J Medina , OH October 18, 2021 Appliance: Samsung Refrigerator RF261BEAEBC/AA-0001 Samsung Refrigerator Rf261beaebc/Aa-0001 / : Refrigerator door.mullion. How to replace Refrigerator Flapper Door Cover Assembly With Mullion Heater. Ordered the part and replaced what was needed. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes