Greenhouse Window Opener Autovent Automatic Roof Window Opener Greenhouse 15-30β. Heavy-Duty Greenhouse Window Vent Opener Automatic Up to 15kg Load Double Spring. ππππππΏ πΌππΏ πΏπππΌπ½ππ: Greenhouse panels are made of high-quality polycarbonate, which not only has excellent UV protection properties, effectively preventing the greenhouse panels from fading and aging, but also provides comprehensive safety protection for your greenhouse.
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