9#Anniehui 2 N9 A( `# o8 z2 Y7 W+ O; u; J& g+ I* h9 t
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 6 w# s# C2 H; {! Z% J( h2 e 7 n3 z3 j: {' P1 I4 r % K, [1 f0 I9 O& r. hIt's two layers of greenhouse plastic that is inflated with air.
15#ceramistpalace ' {* C" z( c4 u* f1 l$ F( e) V9 m0 r! o
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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.