The internal retractable sliding doors are very important elements to separate the spaces inside the hotel rooms. At the same time they can be excellent solutions to define a furnishing style. This is thanks to the various configurations of materials, colors and openings in which they can be made. The model described has a retractable sliding opening inside the wall. Taking advantage of the counter frame inserted in the wall, the sliding door offers the advantage of keeping the walls free. See also the sliding door outside the wall.