9#Anniehui 1 _+ @- d5 ?5 b* k9 E3 p+ b & G2 @8 ^4 W. R% B2 f1 R4 ^Is it your greenhouse ? Look like it is a kind of transparent sheet attached to the wood frame, not glass or anything, right?
15#ceramistpalace " Z( I% `- C7 L3 j ; r. H& C$ m: d0 g5 Z# K0 J2 F" A- _" ~# q
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.