The door is produced between two sheets of 42-45 kg/m³ density polyurethane filled insulation material according to the panel thicknesses. Panel case production is available. Door surface production is made in accordance with the panel and optionally polyester painted, crni (304 quality stainless) sheet options are available. The thickness of the door is 80 mm - 100 mm in normal cold stores, 120 mm in frozen storage stores and 150 mm in shock chambers. Door locks are produced in accordance with international standards and have a security mechanism that can be opened from the inside when locked. The hinges are of the rising and adjustable type, increasing as the door is opened, reducing the friction ratio with the floor. There is a resistance that can be changed very easily when necessary in the frame of the frozen storage room doors. In addition to standard sizes, special sizes can be produced upon request. 60, 80, 100, 120, 150, 200 mm thickness options are available. 0.50 mm thickness remains constant and RAL9002 painted sheet metal is used in standard production. According to the project, PVC, 304 QUALITY stainless steel is used. Colored sheet options are available.