Metal sliding door with two or more leaves featuring a welded galvanized tubular structure sized according to dimensions and weight. Upper guide of 70x60x3 mm or greater depending on load, with ball bearings and a height adjustment system. Fixed bearings on the floor on both sides of the opening that run along the lower “U” of the leaf, eliminating the need for a lower guide.
Automation by rack or chain with control box, key switch, photoelectric cell, and limit switches. Allows for a passage door with lock, key, or panic bar.