Abstract: A metal door or window frame comprises mobile and fixed frameworks each formed by a sub-frame including a substantially tubular section effective to be positioned on the side thereof facing the room interior and a cover section effective to be positioned on the side thereof facing outwards, between the sub-frames and the cover sections insulating material elements being provided for defining an uninterrupted heat insulating barrier therebetween.

Abstract: Prefabricated room structure for facilities in general, such as toilets, bathrooms, kitchens and the like, suitable for installation in a finished form into a building, in which there are prepared separately and in finished form: lateral walls floor and ceiling of the room structure. The so prefabricated finished wall, floor-and-ceiling component parts of the room structure are assembled together on the site by screw fastening and/or welding together the jointed formations to obtain the room structure in the form of a box-like member ready to be installed into the building as a unit.

Abstract: A vertically suspended foil structure for sound muffling and light scattering false ceilings comprises a grid of U-shaped metal crossbeams, resting on longitudinal stringers, and foils attached to one another by a crossbeam engaging device having a spring biassed head for insertion in a hole through a metal plate and a prismatic body whereto a foil is affixed rigidly, each crossbeam having holes through the upper side thereof and mating notches in its wing portions adapted to engage the head in the hole and concurrently snap engage two opposite corners of the crossbeam engaging device in the wing portions.

Abstract: Panel for soundproof and fireproof inner walls, of a type comprising two parallel reinforcing metal plates mechanically interconnected to form an interspace therebetween and a filler of insulating material, constituted essentially of rock-wool like material arranged in the interspace. At least one continuous diaphragm extends parallel to the reinforcing metal plates and divides the filler into parallel layers. The diaphragm comprises a plate of solid refractory material having projecting edges projecting beyond the filler. The reinforcing metal plates have folded edges constituting section member like portions thereof. The projecting edges are in engagement with the folded edges of the metal plates. The folded edges are seam folded to hold the metal plates together.

Abstract: A frame fixture assembly for doors and windows comprising a frame member driven into the wall and a movable frame member framing a door or window. Both the driven fixed frame member and the movable frame member framing the door or window include each a first metal section frame facing outwardly with respect to the wall outer face and a second metal frame substantially parallel to and aligned with the first frame but facing inwardly with respect to the wall inner face. A third frame is arranged between the two frames, acting as a seal between the two metal frames and is made of a thermally insulating material and interconnects the two metal frames by means of a joint connection formed in each such frames.