Rather than having customers and workers worry about holding open a door when selecting or stocking products, open air merchandisers use a stream of air over the opening to keep the cold air inside. Horizontal and vertical models are available depending on your specific needs. Take the available space into account when searching for an open air merchandiser. If you have a lot of horizontal space and plenty of refrigerated items to showcase, a horizontal unit would be ideal. Vertical models should be used in the reverse situation, if you have narrow opening but want to have refrigerated foods easily accessible. Whichever type you choose, you may also want to consider how many (if any) shelves are included. Shelving allows you to display even more items in the available space. Some shelves can be tilted slightly to increase product visibility.