Exhaust Fan question

Could I just use one of those 14 dollar bath fans as an exhaust fan....it has 50 cfl?

well it is an exhaust fan I guess you could use it for an exhaust fan. what is the area you are exhausting? Its probably not cfl, its more likely cfm (Cubic Feet per Minute). To get cubic feet you would need to multiply width times height times depth, I usually round up to the nearest foot fan these calculations.
You do know that bathroom exhaust fans are hooked to an exit pipe that sends that warm moist air out of the attic. This is a must. VV

if you're working with compact fluorescent lights you might find use for it but if ur using anything resembling hps or mh lights, forget it the heat will rise in a fraction of a second. I have a 2000 watt setup in a 150 cubic feet box i know its a lot but to give you an idea, they are in a cooltube I have one pushing air out of the tube , one pulling it out, and I also had to put a ventilator on the box to pull out and push in, and my ventilators are from 250 cfm to 350cfm, so hope its a reference to something, but I would invest if anything in a squirrel fan or somethin,

might setup is on the site here if you want to see the thread is called

New toy i made

peace man