The DS5000.EX is an H.D. sliding door that consists of a medium square cross-section upper track, clamps without holes notches and an H.D. roller on top and large clamps on the bottom which use an internal double turn locking mechanism. Aluminums can be paint in all shades of powder paint (RAL) and anodized. The movable panels are moving with or without the use of standard closers during opening and closing.