9#Anniehui 2 W( y2 v+ B2 }" P% F+ h/ r' O) R+ u' _9 H
Is it your greenhouse ? Look like it is a kind of transparent sheet attached to the wood frame, not glass or anything, right?
. h/ c5 w& |% Q: @# ^( D ( O& n( R1 W" RMy 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.