venting out window question

First off I'll start by saying this grow room is not visible by neighbors and is completely out of sight from the outside so these modifications will not be seen to be suspicious. The room it is in has a sheet of plywood where the window goes because the window broke quite some time ago and the room hasn't been used in forever. I was trying to come up with some ways to vent the soon to be 2x3 grow room without have to run 6 ft of duct up to the attic opening (the window is much closer)

The plywood covered window is about 2ft from the grow area, My plan was to put a louver vent in the plywood, Attach a homemade 6" x 14" carbon filter to that with a 240 CFM fan at the end of the filter

I am going to put a piece of 13" plywood at the top of the entrance to the grow room to hold the ducting that will go down into the grow room,


My question is if/where should I put a 2nd inline fan? should it be right at the wood on the opening of the grow room? will having the air sucking just at the top of the grow room be sufficient? is there a better way to do this?

Right now I don't have an air cooled hood or anything but I want a setup that can down the road be hooked right up to an air cooled hood.

Looking for advice on the best way to pull hot air out of this room

Thank you for your time guys

I'd just use a bigger inline fan and not use two. Do you already have your inline thats 240? I use a 475 cfm 6" inline and it pushes my 3 1000's right the fuck out of the building no problem. I really think that a carbon filter will reduce the flow too much to cool a light and push well, and having 2 fans wouldn't be necessary. I may be wrong, it's happened once or twice before .

bowlfullofbliss said:

I'd just use a bigger inline fan and not use two. Do you already have your inline thats 240? I use a 475 cfm 6" inline and it pushes my 3 1000's right the fuck out of the building no problem. I really think that a carbon filter will reduce the flow too much to cool a light and push well, and having 2 fans wouldn't be necessary. I may be wrong, it's happened once or twice before .

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Thanks! no I don't have any fans right now, so I'm open for suggestions on what to purchase. Should I put the inline fan closer to the grow room or to the window its pushing out of?

its really a preference to push or pull the air with it. most people keep them in the room to keep the noise down on the fan, they are pretty loud. I made boxes around mine with insulation and use insulated flexible, long runs of duct work. I would keep it as far away from the window as possible to make the sound muffled.