Hi everyone I am building my very first hot box in my attic. I have a good size box but I am also considering converting a fridge instead. I am in the process of buying the materials that I need. So what I have on my list so far is a 4 inch carbon filter and acoustic duct. Can any of you guys help me list the correct items I need. I.E. which type of fan I will need and help with the lights. I am going to use led lights to try and keep my heat signature down. Thanks