Jerry,

Here is the reference FBC M1307.2

I think you are correct. The only thing is the metal straps run along the interior side of the cabinet. I'm not able to see if the straps are attached at the bottom third of the AHU.

What you said makes perfect sense. You should get a 1-900 phone number and charge me by the minute for you technical assistance, seriously thank you for always helping us out.

Thanks Jerry and Thom for your help.