The Gemline GH264 Defrost Heater consists of 2 tubes in series, designed to efficiently defrost frozen items in refrigerators and freezers. Manufactured by Gemline, a reputable brand known for quality HVAC parts, this defrost heater is a reliable and durable accessory for maintaining optimal performance in your appliance. The Gemline GH264 model ensures consistent and effective defrosting, making it an essential component for keeping your food fresh and properly thawed.