The thickness of the wall on a burro is slightly thicker, than a boler
. But these windows will fit a boler just fine the will stick into the boler interior a inch or 2 but they had a interior ring that goes on it.
I bought them for a burro and when they wouldnt fit I found a cheap boler that I was gonna redo but then someone offered to buy it so I sold it, and the new owners didnt want the new windows.
I am in Minnesota 55987
I paid $600 for the 2 and have recently lowered the price from $400 to $350 firm.