9#Anniehui3 R% {3 f x/ k
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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( u+ q2 e; A5 q" e5 T' P
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) V* H7 l% k2 U1 s) M7 zMy 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.