OSSO Glass Partion System The whole of the Osso range is manufactured in extruded aluminium which is 100 percent recyclable. The unique bearing bar works on a floor to ceiling pressure fit system: the bars are put in to position and then simply tightened up to the ceiling. The glass is then hung from the Osso knuckle joints. The simplicity of the fixing method ensures fast and easy construction and, if desired, relocation.