Ai 316L SST 100C UL Certified 16 CF Vacuum Oven With 6 Heating ShelvesAi 316L SST 100C UL Certified 16 CF Vacuum Oven With 6 Heating Shelves Introducing the new Across International UL certified 16 cu ft vacuum ovens, this certification is required by many municipalities, and it also provides a higher standard of equipment safety and lifespan. Also come standard is the secondary over temp protection dial, 2. 5X larger internal tubing for a quicker vacuum purge and release, and a secondary door handle to provide a better