Billings Logan International Airport
Installed during an extensive remodel in the 2010, the four revolving doors are Boon Edam Duotour revolvers with integral sliders. Curved, laminated glass and powder-coated extrusions match the existing storefront to create a welcoming entrance for people coming into Billings. Unlike traditional center-pivoted revolvers, these employ a dual-motor perimeter trolley drive system. This allows the use of an energy efficient revolving mode when outside temperatures are extremely cold or hot, or the doors can be parked during mild conditions and the integral slide doors used.