Review Details

Automatic Vent Opener - Standard

Product Review (submitted on October 19, 2011):

I've had two of these on a cold frame and it's the difference between success & failure. Prior to installing them, we'd either forget to open the cold frame, and our things would cook. Or we'd likewise forget to close the cold frame, and things would freeze. This little gem of automation picks up where we leave off.

pax
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