So I'm going to grab a 48x24x2" carbon filter and a 20 pack of ten inch paper plates holder. Cut as many 10 inch circles out as I can and sandwich 2 in between the plates and seal them up. Figured this should work for duct holes and keeps pest and mold and spores out not really worried about smell on intake of course but clean air is the best. So what do you all think a good plan or fork or for proper filters? I'm in a dark room even tho this should eliminate light or can also double light box it.