Any V-8 engine running at full throttle ought to be able to pull 400 CFM
through that duct. Other than that, I'm utterly useless :)

Cheerful regards,

Bob


Forrest Christian wrote:
> 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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