A variety of refrigerators featuring a glass see-through door. Commonly these are commercial merchandiser refrigerators, refrigerators that carry chilled products for purchase that the customer opens themselves to select the item they're buying. This tag may also include beverage coolers, a small mini-fridge-like device featuring a glass door used for chilling drinks. Unlike a true refrigerator, beverage coolers don't reach temperatures cold enough to safely preserve food.