Without using wood materials between two sheets of 40 (+/- 2) density polyurethane is injected. Allows the Monaray transition. In normal cold storage is 92 mm and 120 mm in frozen storage room. Standard on both sides of the wings are made of PVC sheets. Optionally it can be polyester coated steel and CrNi. It includes single line rubber gasket framing the door wing at normal room housing. Safe in the freezer room door There are many easy changes necessary resistance. Special PVC outer casing is aluminum inner frame.