GrowCNanswered grow question 3 years ago I mount my fan and filter outside the tent so it doesn't consume any space inside. Air is sucked in at the top of the tent via a PVC pipe snorkel and blown out through the charcoal filter. I set the filter on the floor and that becomes the base. Then I attach the fan (I also use AC Infinity) with a plumbing rubber boot (Fernco) coupling. Then another coupling on top of the fan to attach thin wall (sch 30) PVC piping up and into the top, side opening of the tent. Do NOT glue your PVC pipe connections. Just shove them together without glue. The rubber couplings are nice because they make it easy to take apart and it dampens vibration and noise. And, if you don't glue your PVC connections they come apart easily if you want to change something or need to move something.