Ok, since you begged.
I measured a couple of different places and things. First is an exmod B pillar with no foam that measure 1.765" and a .11" wall thickness. The rest of the measurements are from a NAS cage. Rear C pillar support was 1.75", B pillar support 1.51", front A hoop 1.76" and the cross bar on the front A hoop was 1.505".
Hope this helps,
“Don't judge a man until you have walked a mile in his shoes”