The Compact door is different from normal roller or sectional doors. As it opens, the panels fold up above the doorway into a small unit, which saves space. With its well-developed technology the Compact door needs little maintenance and is easy to operate. Its special rail system means that it works without torsion springs and does not need to be suspended from the ceiling. The overhead folding door can be fitted in a wide range of locations. It does not obstruct crane gantries or cables, nor does it block windows or lighting. If there is too little space to fit a sectional door on the interior of the building, then the Compact overhead folding door can also be fitted externally.