I'm in the same situation and have been in the planning stage for a ventilation system for the garage and possibly the basement. I have an Elicent 8" inline fan that I'm working with that is rated at 636 cfm. Just picked up some 8" flexible duct and I have a 4 day weekend to work on it. I'll need to do something about a damper to keep the air from blowing back when the fan is off.
I tried the B&M option, but it takes too much time and the cigars I want to smoke I already have at home.
