Not sure this is the right forum for this question........if not someone please direct me.
So about to re-route the air flow out of my 2005 E350 EB rear factory-installed A/C housing. The A/C portion will be disconnected from the front system for a few reasons, main one being I simply don't need A/C in the rear area ever.
Knowing the CFM and recommended static pressure would be helpful determining the new duct size and maximum allowable length of run.
Any help or pointing me in a good direction would be very, very much appreciated.