Greenhouse Auto Vent Opener Heat Sensitive Heavy Duty Dual Spring High Lift

Greenhouse Auto Vent Opener Heat Sensitive Heavy Duty Dual Spring High Lift

• ?【Premium Material】Automatic window opener is made of aluminum alloy, maximum window opening: 45cm/17.7inch. Maximum opening about: 30°. Maximum opening weight: 7kg/15lb. Size: 38 x 9.5 x 9.5 cm / 14.96 x 3.74 x 3.74 inch (appr.)
• ?【Double Spring Design】Compared with the single spring vent, the double spring greenhouse window opener has stronger thrust force, more solid, and much durable.
• ?【Solar Heat Sensitive】Non electric, our window vent opener uses solar energy. The automatically adjusted temperature is 15 to 25°C. When the temperature exceeds 25 degrees, the window regulator will remain open. The temperature drops to 15-18 degrees Celsius and the opener will close completely.
• ?【High Performance】As the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating.
• ?【Ideal for Your Greenhouse Window】The greenhouse window opener can be clamped onto or screwed onto your greenhouse frame, opens and closes your greenhouse window.