The OEM Whirlpool Refrigerator Defrost Thermostat Original Part# 2321799 #h7a is a genuine replacement part for Whirlpool refrigerators. Specifically designed for the Whirlpool 2321799 model, this defrost thermostat ensures proper functioning of the refrigerator's defrost system. With the trusted Whirlpool brand behind it, this part is a reliable and high-quality choice for maintaining the performance of your refrigerator.