Thanks. The plan is for metal 2x4 channel with 2" of insulation. But instead of tempered glass doors, I'd probably spring for corrugated clear plastic over curved ribs with the corrugations running crosswise.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
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