9#Anniehui : i: I2 f, u! c7 y3 i, z : K/ k* r6 R ZIs it your greenhouse ? Look like it is a kind of transparent sheet attached to the wood frame, not glass or anything, right?
13#ceramistpalace 5 N& }$ T5 ]2 X4 ?! o2 A' I" e3 F, n- F8 Z5 |# O% A6 M) h
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It's two layers of greenhouse plastic that is inflated with air.
15#ceramistpalace ; `! r7 ~2 r$ a9 N1 s : ]4 x4 M8 ~( U5 _. ] W& y( z6 g0 Y* @! u: g1 t S' f( F
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.