ARS12PV456 12CF SOLID DOOR UNIT IS CERTIFIED PURPSOE BUILT for SAFE VACCINE STORAGE. Accucold is proud to lead the industry with the largest line of cold storage product sizes certified to NSF/ANSI 456 Vaccine Storage Standard. The Pharma-Vac Performance Series supports meeting regulations and guidelines from the CDC, State Agencies, World Health Organization, and other Health Ministries on vaccine storage and handling. Temp. Security and Saftey Features: https://www.accucold.com/product/ARS12PV456