Sliding door with 90 mm thick wing, suitable for standard temperature rooms (+4 / -20 °C). Sliding door with 120 mm thick wing, suitable for low temperature rooms (-18 / -40 °C). Sliding doors with 90 and 120 mm thick wing, insulated with injected expanded polyurethane of 38 / 40 (kg/m3) density. The standard coating either all stainless steel or in galvanized white sheet. For low temperature room, electric heating cable is located either in the frame, under the gasket or in the frame and its easy to change in case of fault. SP model has double perimetral tublar gasket in EPDM.