Revolving Doors 101: Specifying a more energy-efficient, secure opening
+ Read More
Revolving doors have been manufactured for over a century. Theophilus Van Kannel was granted U.S. patent 387,571 on August 7, 1888 for a “Storm-door Structure” that was a three-partition revolving door. Since then, their general benefits have remained the same—creating comfort, saving energy, improving traffic flow, and enhancing security.