Re: Cold Frame
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
Earlier this fall I asked the list about cold frame information, and
>received a lot back. I went ahead and sketched one out in my mind and
>purchased the lumber, but cold weather and an unpainted (then) house
>kept me from working on it.
>
>One of the things that people suggested using were automatic cold frame
>openers. They're little motorized gadgets that open the cold frame
>slightly on warmer days to let air circulate through, then closes them
>on colder days. I found some through A.M. Leonard and other mail order
>sources, but nowhere does it say how they operate. Is an AC outlet
>required? Or are they 12 volts, running off of a car battery? I
>was wanting to build this _way_ in the back of the yard, and there's
>currently no electricity out there. Maybe someday, but not now...
>
>Comments?
>
>Chris
>
>----------------------------------------------------------------------
>Christopher Lindsey
>zone 5b USDA, Urbana IL
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