The cooling sector generally uses sandwich panels which are suitable for food storage and processing facilities the eccentric locked (or unlocked) sandwich panels are painted with RAL 9002 polyester (dust/bacteria free), 0,50 mm thick on both sides and with galvanized steel sheets over it. They have removable PVC and are hardened in the inside and filled with polyurethane insulation. (d=40 ± 2 kg/m3)