9#Anniehui2 q% s1 H' ^: _$ k h
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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#ceramistpalace8 I; h" d4 d) i( l2 O
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( {0 v# [8 J' q9 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.