Here is my second attemp, my first was very bad. My grow box is 2x2x4ft tall. I have 8in exhaust/intake. My exhaust is on the ceiling and my intake is in the center of the opening door. Meant to put the intake on one of the sides instead of the door but i wasn't thinking when i glued the pieces together. I've included some pic (sorry bout the blury pic). This is a newbie start (again). Please give me as many advice as i need, all advice will greatly be appreciated.