Chill draft beer in-line, without a refrigerator Draft boxes are used to chill draft beer in-line, without the need for a refrigerator. They are constructed out of a large 48 quart cooler. Inside the cooler is a cold plate, through which the beer travels. Setup is simple—just fill the cooler with ice and dispense your beer using the draft box. Draft boxes are ideal when you need to dispense beer at a location without a refrigerator. They can be used with homebrew kegs or commercial kegs—just attach the approriate keg coupler or disconnect to the liquid input line.