Natural, non-flammable, and recyclable product. Possibility of easy revision and replacement of single elements on the facades. Resistance to high wind loads. Openwork metal suspended ceilings "Casetton" find their application in large interior spaces of public buildings. Laying the elements on the supporting structure allows the formation of a horizontal ceiling curtain with specific effects, through which both the lighting fixtures, sensors, and sprinklers of the fire-extinguishing installations and diffusers of the air ducts can function smoothly.