9#Anniehui, Y# L9 F* L' L& w
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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?
15#ceramistpalace - D$ R1 }! E8 ~6 z2 Q* a$ |6 P , J* n* e+ P) a7 D, w 1 j' k- \& X- I# |% pMy 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.