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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?
14#Anniehui 8 W5 X, l4 H9 P5 K) ?! t, H! M- U : `- m- Q$ c# F h# |0 {8 |Is it a specific kind designed to hold air like a balloon? where it is available ?
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- n, ~( U1 S/ p7 ?0 `+ S7 ~My 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.