Insulating panel with a unique and worldwide patented mechanical panel joining system that ensures maximum tightness. Installation without any type of joint sealing. System that minimizes thermal losses providing greater energy efficiency to the whole. All panel encounters can be made by Instaclack® mechanical joint. With concealed suspension of ceiling panels that provides the advantages of a passable, invisible and hygienic ceiling. Diaphanous inner face that facilitates cleaning and maintenance. No thermal bridges. Safety compared to the traditional suspension system using inverted Omega / T profiles. Panel profiled on all four edges, made to measure and without cuts, avoiding contact with air and therefore its oxidation. Modular system: removable and expandable. Reusable since the properties of the panel remain unchanged over time. Excellent insulating and structural behavior. Self-centering: the system itself guarantees the correct installation of the panel. Its HDX® finish, thanks to its excellent resistance to corrosion and its excellent behavior of color uniformity thanks to its good resistance to solar radiation, provide durability to the panel without losing its performance.