I am getting someone to build an audio cabinet for me. It is going to be about 40"x32"x22" (wxhxd). I don't want it to be open in the front but I do want air to circulate so that my equipment doesn't heat up. I was thinking of replacing the glass on the front doors of the cabinet with perforated aluminum sheets. Do you have any suggestions on where I could get some of this material and what material would be effective. I still want to be able to use my remotes. Any help would be appreciated. By the way, I live in Hamilton, Ontario, Canada.