Headroom is the space between the top of the door opening and the underside of the lowest part of the ceiling above the door. Required headroom for a commercial overhead door depends on which spring configuration and what kinds of tracks are to be used in the installation. Special follow the roof tracks, high-lift, full vertical tracks or dual-tracks can be used depending on how much headroom there is. For a standard door with torsion springs and 2” tracks with a 15” radius, requires minimum 16” of headroom. Adding for instance a trolley opener, requires even more headroom. We recommend however that you contact Easy Lift Doors so that we can have a look at your door opening and determine which tracks are best suited for your overhead door project as there are a lot of factors to consider.