Infill Type : Polyurethane Foam/Rock Wool /EPS Door Types: Swing Door, Hatch Door, Sliding Door, Swing Freezer Door Application: Food industry Alfa offers a top quality cold room and freezer doors. The door construction and linings are Specially designed for the food industry and fulfill the environmental requirements of that industry as well as being able to withstand rough treatment.The door leaf panels are injected with high pressure polyurethane. All doors have a smooth metal surface which can be easily and hygienically cleaned.