Experiencing issues with uneven cooling or defrosting cycles in your Samsung refrigerator? The heater metal sheath (DA47-00318N) might be the culprit. This genuine part replaces worn or faulty heating components to maintain optimal temperature regulation in your appliance. Designed specifically for Samsung 4-door French door refrigerators, this metal sheath ensures reliable performance. Remember to verify your refrigerator's model number for compatibility before purchasing.