9#Anniehui # Y. R1 A6 V( x% d" q% v4 J/ ~# l4 p; A( `$ k. W) e: v# V
Is it your greenhouse ? Look like it is a kind of transparent sheet attached to the wood frame, not glass or anything, right?
( j2 K3 M$ U, s8 r 1 U" U7 _5 s; ?) R; H2 \9 F0 jMy 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.