Re: Cold Frame
At 02:35 PM 12/29/97 -0500, you wrote:
>Chris,
>
>No AC is involved in the vent opener that I have. Something -oil? expands
>forcing the cylinder up and consequently opening the lid when the sun warms
>the frame. Charlies Greenhouse Supply is where I got mine. I don't have the
>name of the one I have handy but can look it up
>if you like.
>
>They are easy to install and work very well.
>
>Gail
I think they use wax. Margaret
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