Door Engineering, an aviation hangar door industry leader, has been delivering customized aircraft hangar doors for the U.S. military for more than 40 years. Its skilled team of designers and engineers are not only experienced with refurbishment of existing door systems, but also in the design of high-quality hangar door systems to meet today’s military requirements. It provides door systems which are long lasting, durable, require low maintenance and operate with superior speed and safety. Shown is the 133rd Minnesota Air National Guard Hangar, MSP International Airport, featuring the bottom rolling hangar door system. For more information call (800) 959-1352 or visit www.doorengineering.com.