Here's mine.
It has two 30 inch pieces of 11x12 in flexwatt, one per side wall wired into one plug in going to the thermostat.
It has a bathroom ceiling fan picked up at home depot, it has a plug in already attached, I plugged it directly into a zoo-med rheostat to control the fan speed, which allows you to fine tune the temperature shelf to shelf.
IMO computer fans are not close to strong enough to work in a large inc.
My older coke cooler ran one piece of flexwatt down the back with the same fan set up, works great still.
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