9#Anniehui / c r, }$ _/ b! A; t6 r) c; D4 G/ o
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 $ _# W" r* J y% x3 r/ d% N7 [5 M 1 u. O( l# \' Z4 k 5 s! }# i& e6 r$ i6 NIt's two layers of greenhouse plastic that is inflated with air.
15#ceramistpalace 5 S! j# w+ ~" Y9 I. L . D3 }0 M2 Z, N# J1 U5 @7 F + w. N% U+ s3 E1 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.