Randy,
We use "Aero Cool 14cm Streamliner" computer fans on our freezers. We just brought in 12 units which we hooked to the 12v power source. 2.7 watts input power - so very inexpensive to use. They come with 4 led lights but we just clip 3 of them prior to install. I leave one light on for a power indicator.
Joe Carson
Bob, I am very happy with the incubators that I have build from salvaged
upright freezers. Use a salvaged mercury wall thermostat, a simple Radio
Shack low-voltage relay, a thrift store warming tray as a heat source, and a salvaged computer fan. Cheap and extremely accurate.
Randy Oliver
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