If your Samsung refrigerator is experiencing uneven temperatures or frost build-up, the heater metal sheath (DA47-00424W) may be the culprit. This genuine Samsung replacement part is designed for your 25.1 cu. ft. 3-door French door refrigerator, ensuring reliable performance. It operates at AC120V, providing consistent heating to keep your appliance functioning smoothly. Prior to purchasing, verify your model number to confirm compatibility.