9#Anniehui $ m4 V. b5 D: H" Q" X' J: Q- ^ : r" _0 s4 G7 R$ ^% M6 Y/ k7 |Is it your greenhouse ? Look like it is a kind of transparent sheet attached to the wood frame, not glass or anything, right?
% r. U+ ^& e% ~$ l- Y$ b! r 5 ^( _$ E, P- w' ?+ \- \8 g: [; f) ?$ R' mMy 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.