Our turbo nozzles will be about 2" but the blowers are about 1". To me, it seems like the blowers might stress test a large truck, SUV, or van roof being that close. There is a Mark VII choice wash somewhat nearby that must not have the blowers aimed right because it made my truck hood ripple like it was liquid. It was fascinating and disturbing at the same time. It was several years ago right after they installed it and maybe they corrected it but I have not been back to see.