Do you think passive exhaust will be sufficient new build


Well-Known Member
Hello all,

Currently roughing in my hvac intake and outtake. My setup is 540 cubic feet and I am using a 6" fan with 473 CFM. I am running 2 400 watt HPS and 1 315 CMH.Do you guys think a passive exhaust will cut it, my budget is stretched very thin and I have plants vegging in my garage that need me to finish this build haha.