We built a commercial garage door installation featuring a custom all glass aluminum frame for the Aspen Volunteer fire department. These doors features timers that automatically close the doors after the trucks leave on a fire / emergency run. They photo cells to prevent the door from closing on a fire truck, if it senses an obstruction it will immediately reverse direction to full open. The ladder truck bay has an extra photo cell mounted up high for the trucks ladder basket because it sticks out much more than the top of the truck.