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Jack-Store Solar Heat Sensitive Automatic Thermofor Window Opener Greenhouse Autovent Vent Opener Standard - Lifts 15 Lbs

Jack-Store Solar Heat Sensitive Automatic Thermofor Window Opener Greenhouse Autovent Vent Opener Standard - Lifts 15 Lbs

Shared by: Annette Butler from amazon
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Description
Ideal 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. No batteries or electrical power needed. The liquid-filled cylinders expand as temperature increases. Including fittings & installation manual. Can be clamped onto or screwed onto your greenhouse frame. Important notice:Do not use this opener anywhere the temperature will exceed 50° (122F). Please ensure your greenhouse window can be opened freely by at least 45cm (18"). Do not apply excessive loads by locking or covering window. Do not dismantle the cylinder. The opener CANNOT stop by manual. Item Specifications: Maximum window opening 45cm Maximum opening about 30°, depending on adjustment and load Maximum opening weight 7kg/15lb Adjustable open temperature range 15°- 25°/60°-77F Package includes: 1 x Automatic window opener

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