When you need a cold food vending machine that is a industry icon well National vendors cold food vending machines do just that. National vendors food vending machines have been setting the benchmark for many years and the quality of the National brand is hands down one of the best. The National 431 food vending machines has some great features such as High impact Shoppertron display lets customers shop with their eyes promoting product sales. Prefer Max automatically returns the drum to the view with most products Side of drum extra storage Health Control built in controller Shelf Configurations can be easily changed for a wide selection of products