Jnchdghwa Silver&Black 3X Automatic Aluminum Alloy Greenhouse Window Opener Roof Vent Autovent Solar Heat Sensitive Automatic Window Opener
Jnchdghwa
Non Electric, uses solar , open or close the greenhouse vents as temperature rises or dropsIncluding fittings & installation manualCan be clamped onto or screwed onto your greenhouse frameImportant notice:Do not use this opener anywhere the temperature exceed 50° (122F)Please your greenhouse window can be opened freely by at least 45cm (18inch) perfect for your greenhouse window--opens and closes your greenhouse window. as the temperature changes automatically, maintains the best growing temperature.and prevents your greenhouse from overheating. Do excessive loads by locking or covering windowDo not dismantle the cylinderThe opener CANNOT stop by manual., Manufacturer: Jnchdghwa
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