Fit-Lock is a pressure fixing system, both vertically and horizontally, conceived for the assembly of panels, ceilings and linings for walls and ceilings of each room type. The concentric system Fit-Lock allows you to move the panels when put in place to achieve maximum accuracy in matching and in pairs. Fit-Lock is easy to place, remove and replace, so as to allow the most complicated operations of inspection, maintenance, recovery, etc.