ANSWER Hi. The booster heater is not standard on this model, and is optional. The booster controls ARE pre-installed though. We sell a few booster heaters on our site, which you can find by searching "booster heater"
Wasserstrom: A Trusted Family Name in Restaurant Supplies & Equipment
Headquartered in Columbus, Ohio, The Wasserstrom Company is the world's leading restaurant supplier and distributor of food service supplies and equipment. We carry the top brands from the industry's leading manufacturers.