This KBB-70-2BG Back Bar Cooler by Kool-It was built in such a way so that it's perfect for heavy use inside any food service operation, including restaurant, bar, coffee shop, or cafe. This refrigerator features a durable design, engineered to the highest standards. It uses a foamed-in place cabinet, which utilizes high-density, CFC-free polyurethane insulation to achieve supreme efficiency ratings. The refrigerant used here is R-134A, a type of refrigerant that gives its operator the most years of trouble-free service for his buck!!