Sliding one-wing opening cold door, in accordance with the EU rules and regulations, suitable for normally chilled environments (until -5 °C NT model) and low temperatures environments (until -30 °C – BT model). Supporting counter frame made of 20/10 thick Aisi 304 stainless satin-steel, or of pultruded material. Heating perimeter cable at a constant power of 60 W/m (only for BT model). Overhead sliding door of zinc galvanised steel, with slide and protective casing. Ground locators, made of glass filled nylon (wings slide guides). Door leaf: electrically welded stainless steel frame, with pre-painted plastic-coated zinc ledges, insulated by polyurethane resins injections (density kg 40-45 / cubic metre). Thickness: 100 mm (NT) and 120 mm (BT). Special type perimeter rubber sealing. Stainless steel inside and outside handles, to open or unblock door. Pre-painted or zinc galvanised steel connecting plates.