Architectural grille facade element designed by Jean Prouve and manufactured by C.I.M.T, France 1960. This panel was part of the Institut National des Sciences Appliquées (INSA), Doua campus building, Villeurbanne, France 1957. This isolation element is made of pressed aluminium and is foam filled. It is a very decorative architectural element, when hanging on a wall it is like a piece of art.