9#Anniehui ' ?: q: ]: }+ _0 x* Q% b8 G R ' E1 o5 ^/ O% O. E0 e; G: f% y2 ^Is it your greenhouse ? Look like it is a kind of transparent sheet attached to the wood frame, not glass or anything, right?
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4 I j: p7 s5 r7 P6 o" | E6 z. ^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.