Where can I find a 7' WIDE garage door?

I live just outside NYC and have an older home (early 1900's) with a tip-out style garage door. The door is 70+ years old and no longer works properly. There are no retailers that make tip-out style doors and I have a hearth approx 28' behind the left side of the door. I need to change the doors to stardard roll-up doors but due to the location of the hearth I will need to use a 7' WIDE door. Does anyone know where I can purchase this size door in my area? Thanks