The Revision door is compatible with National models 157/167 and GPL 159 machines. This door is one of the most straightforward ways to refurbish outdated vending machines. It is easy to install and provides a way to update with UCB™ (Universal Control Board technology in the door) and energy efficient LED lighting. Vendors Exchange offers additional features as well. Reach out to our local area sales representatives for more information and to purchase. Don’t forget to check out additional doors with vending machine interface improvements as well.