As you can see it used to have some plastic covering. The frame is held together with (sorta brittle) plastic pins but my main focus is how I’d re-cover the frame in plastic:
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What sort of adhesives should I consider for outdoor metal-plastic bonding?
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Is adhesive and soft (clear) plastic even a good idea?
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Have any of you done something similar?


There are about 40mil to 1mm, though, and I don’t think they’re talking about food wrap. But plastic greenhouse panes are about 5mm thick, so maybe that’s what is meant here.