Greenhouse Auto Vent Opener Heat Sensitive Heavy Duty Dual Spring High Lift
$25.00
AUTOMATIC HEAT-ACTIVATED VENTING— The temperature-responsive cylinder opens a compatible greenhouse vent as the air warms and closes it as temperatures fall; no solar panel, batteries, wiring, or electricity required.
Description
【Premium Material】Automatic window opener maximum window opening: 45cm/17.7inch. Maximum opening about: 30°. Maximum opening weight: 7kg/15lb.
【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.
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