4 clones arrived 11/11. almost got my indoor, outdoor room completed except for how best to exhaust thru a window. i cut + fitted (best i can) cardboard to block the window, then 3 x 1/2" rigid insulation. now, whats the best way to position these pieces - push them as tight as possible together, against the window, or push the cardboard tight to the glass + leave space in between the insulation pieces or maybe something else? also, do i cut all of these pieces with the window open fully, partially, or barely. then where best to locate the vent? using a 400 cfm vortex fan to exhaust area of almost 400 cubic feet. (7 1/2 x 7 1/2 x 7 1/2). hope this makes sense. any + all suggestions welcome.