box is 4 feet wide, 2 feet deep, 4 feet high. have 1 50cfm bathroom vent fan in top front left corner for pulling up air through my DIY carbon filter..then im going to set up either a 4" or 6" inline duct fan in the top next to the C.F. pulling air thru the box and dumping it into my attic. im going to use negative pressure and cut a square out of the bottom right wall for the fresh air from the outside to enter into. im also going to put a desk fan in the top back right corner to add to the air circulation. I have a switchable 400W MH/HPS light with a reflector...im going place the ballast on the top of the box [all of the electrical wires are going to run outside the box thru caulked hole(s) ]
