9#Anniehui, D* s2 V2 H. X1 W& a6 T$ X$ M
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Is it your greenhouse ? Look like it is a kind of transparent sheet attached to the wood frame, not glass or anything, right?
13#ceramistpalace' r+ u2 t* C- e& T6 S
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It's two layers of greenhouse plastic that is inflated with air.
: e, T$ v/ v/ S+ m3 D: \0 p7 p - `' G* P4 P- @2 o8 sMy husband seals the plastic layers himself, then use a small fan to blow air between the two layers. The plastic can only be bought at Horticulture supply stores.