Jeff,
The plastic is the Dura-film(R) 4 Thermal AC Plus, from a local AT Plastic distributor, $240 per 24'x100' roll. SUpposed to last 4 years
We used hemlock 2x4"-8', but we cut it into 2x2" - that's the less expensive option (rather than buying 2x2"s)
No need to tie the cold frames - they are heavy enough, and we hardy get any winds around here - the 'usual' is 0-5 km/hr, last week we had a 'storm' up to 70-90 km/hr, and these didn't move.
I'll try to figure out the sketch thing - I will check with my father in law if he had one :wink:
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Tatiana's TOMATObase
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