The pre-hung door system reduces the time and cost of installation on site. The system consists of an armed frame and a door attached to it by hinges. In case the span delivered by the bricklayer or drywall worker has not finished to the required extent, it can be leveled with the help of a pre-frame that can be made of wood or MDF. Once the span has the exact measurement, the pre-hung door is installed in less than 5 min. This system avoids storing doors in the project, since if proper work is done with the span, the doors can arrive at the site and be installed the same day.