That probably would work, Hank. Fred, ours is likely like yours. There is a metal cover back there. I thought I tried reversing those but it's been so long I'm not sure anymore. I'll look again.
Hank, mine is a computer case fan, the kind that mounts on the case to exhaust hot air. Also known as a "muffin fan".Here's just one example from a quick google search... Ours is chrome. I've seen blue and other colors, too. Best Buy and other stores with computer parts will have them. You should be able to get a good one for somewhere between $5 and $10. Be sure it's 12 volt.
