Wooden shutter with a thickness of 56 mm, joint structure between uprights and transoms with pin and tenon system. The internal profile of the door is worked with a design that recalls the frames once used to embellish the door and to contain the slats. This profiling, being obtained from the crosspieces and uprights, gives a greater guarantee of durability of the design compared to the assembly of a slat. The lower and upper crosspiece are equipped with shapes to avoid the filtering of light between the first and last slats and the crosspieces. The thickness of 56 mm gives a greater guarantee of durability over time.