So, I'm putting in (finally) a new-to-me wave solder machine.   It has a 
4" duct attachment, and the manual indicates that some sort of exhaust 
fan capable of 400CFM needs to be attached.

I'm having a bit of an issue finding the source for such a beast.  I was 
hoping to find something >400CFM already in a 4" duct (even though 4" is 
a bit small for 400CFM), but no luck.

I know some on the list have either a wave machine or other production 
equipment with similar (or more aggressive) ventilation 
requirements.....  so I was wondering if anyone could provide me some 
insight into how to pump this stuff outdoors...   I think I get to pump 
this out through a hole in one of the garage doors in the new shop, so 
smaller hole is probably better....

-forrest
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