Looks good but being an old bricklayer, if you'd have moved over from the center of the block (to the right) it would've been way easier. In the center of a block like that there's a concrete web. You had to go right through the center of it. But good job not breaking the whole block out of there! I've punched holes like that many times. Takes about 2 minutes with a hammer.

Only problem I see is that if you're venting the air out of that room with mj plants growing in there, hopefully you don't have neighbors right next door to you. Course maybe they wouldn't recognize the smell of flowering cannabis. Or maybe it's legal where you live?
Marc Benson Reviewed by Marc Benson on . I'm EXHAUSTed Well i got the exhaust/vent system up and running..... Used a blower I had...getting through BRICK wall not an easy thing.... All piped with 4 " to the outside of the building with a dryer vent at the end :) Conditions went from 95 degrees 90% humidity to..........................85 degrees 65% humidity Thanks for all the imput.... Rating: 5