Help ID the Mystery Centrifugal Supercharger!

GTGrinly said
Do you know anyone that does heating and A/c work? They should have a CFM meter, to check air flows at the ducts, it won't be real accurate but you'll be able to say if it's around 550 or ???...

Funny you ask that, my best buddy's dad owns his own HVAC small business. I'll check with him and see if he's got one. Good suggestion!