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Any reason why this couldn't be used to introduce outside air into a freezer? Any unique considerations for doing this to keep food frozen?

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Outside Air Exchange Control
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Hi Ben, Yes, this could definitely be used for freezers as well as coolers. Lower set-points, of course, but same principle. In fact, one of the challenges with using outside air for coolers is that the inlet area of the outside are is prone to freezing on very cold days. So routing of the inlet air and distribution / diffusion can be important. -Chris