Question on fans

stunner69

Well-Known Member
Hey all, I'm in the process of making a carbon filter type set up. Just wondering if I have a fan sucking air out through the carbon filter is it really necessary to have another fan blowing in air or could a guy just have a hole to allow fresh air entry. I have a small space 2 1/2' x 4 1/2' x 4'high and my fan will be sucking air out close to the top of my room, I was thinking of just leaving an open hole on the bottom. Looking at a 4" (80cfm) fan and there like $40 here so if i can get away with one it would be nice, thanx.

Also wondering if anyone's used the odor eliminators, the ones in the liitle plastic containers u just take the lid off or drill holes in it, wasn't sure if they would work or not
 
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