Liebherr Mediline flammable meterials storage refrigerators feature feature spark free analog controls and have clearly marked labels on the exterior for easy identification as flammable material storage. All appliances with spark-free interiors are tested according applicable UL standards and NFPA guidelines. Rated with Class I, Division I, Group C and D interiors, these appliances are suitable for storing potentially explosive and highly flammable substances in sealed containers. All units have door locks to prevent unauthorized access and door hinges can be easily reversed on-site. The commercial-grade, molded polystyrol inner liner is exceptionally easy to clean for optimal hygiene. Molded trays prevent the glass shelves from tipping over, allowing for adjustable heights of the shelves. The sturdy glass shelves are easily adjustable in height and can be conveniently removed at a door opening angle of 90°. They ensure secure storage and have a loading capacity of up to 40 kg / 88 lbs. The defrost water drain is sealed for compliance with UL standards for flammable material storage refrigerators. The defrost water obtained during the automatic defrost cycle is collected in a tray which has to be emptied manually at regular intervals.