A glass door refrigerator is a type of cooling appliance designed for easy visibility of stored items. It features transparent glass doors that allow customers to see the contents without opening the unit, making it popular in retail settings like convenience stores and supermarkets. This design helps reduce energy consumption by minimizing the frequency of door openings. These refrigerators come in various sizes and configurations, often equipped with adjustable shelves for flexible storage. They are commonly used to display beverages, snacks, and other perishable goods, ensuring that products remain fresh while being easily accessible to customers.