Experiencing a build-up of frost in your Samsung refrigerator? Consider replacing the heater metal sheath (DA47-00465A). This genuine part is crucial during the automatic defrost cycle, melting frost from the evaporator fins. To replace, make sure to unplug your refrigerator and wear gloves for safety. This heater is compatible with various Samsung side-by-side refrigerator models. Double-check your refrigerator's model number to confirm compatibility before purchase.