We got this quote from manufacturer regarding AHU compliance

((While some sections of this standard do not apply to our product, we do comply with the
sections that apply.
According to the standard, air handling units are exempt from compliance to Section 5.4 -
Airstream Surfaces since the section specifically exempts sheet metal surfaces and metal
fasteners. Air handling units are constructed of sheet metal with metal fasteners))

I am not sure if this statement means that is comply or no, please advise.