This project included a recent addition to the existing hangar to enclose the tail section of aircraft to allow for maintenance during inclement weather in a northern tier climate. The project consisted of new structural framing system and new 145’x50’, 5-leaf, one-way door system supplied and installed by Norco Industrial Doors. Implementing the One-Way door system allows for optimum space on one side of the hangar for extra space as only one door pocket is needed for door storage.