The one potential drawback is such that cases are limited to full-service stations only. Maintaining the correct temperature also is critical. If it's too cold, condensation collects and runs down the front of the glass. If it's too hot, food dries out. Manufacturers have addressed these issues in different ways.
Many units feature small fans that produce air current and prevent moisture buildup.
Another unit has individual heat settings for each section. As a final piece of advice, Henry reminds that the location should be chosen carefully. Impulse buys are so important in this business. Our approach is to make every square inch of the shop generate revenue in some way.