Visi cooler is the common Indian trade name for a glass-door merchandiser. It is designed to sell as much as to store: the glass door lets customers see the stock without opening it, LED lighting makes products stand out, and a canopy or header panel often carries branding. Single-door and double-door versions are the most common, with sliding-door models for narrow aisles.
Glass insulates far less than a foam-filled steel door, and these units are opened by the public all day, often in shops without air conditioning. That makes the refrigeration system's capacity, the door's glazing and the door-closing mechanism central to performance. Typical holding temperatures run in the +2 to +10 °C range, depending on whether the unit is for soft drinks or for dairy and other perishables.
A kirana store in Indore might keep one visi cooler for cold drinks and water near the entrance and another, set colder, for milk, curd, paneer and butter. In peak summer the drinks cooler may be opened hundreds of times a day, so pull-down time after restocking with warm bottles is a real buying criterion.