Greenhouse Window Opener Ventilation Opener Solar Heat Sensitive Automatic Vent Opener Double Spring Aluminum Ventilation Opener

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[Prevent Overheating] With automatic temperature changes, the ideal growing temperature is maintained and the greenhouse is prevented from overheating.
[Durable Material] Greenhouse window opener is made of aluminum and stainless steel, which is durable and weather resistant for long term use.
[Solar Powered] A mechanical system activated by heat that requires no batteries or electricity and uses solar energy to open or close the greenhouse’s vents as the temperature rises or falls.
[Quick Open And Close] Automatic vent opener opens and closes greenhouse window quickly and can be clipped or screwed onto your greenhouse frame.
[Automatic Temperature Control Sensor] Automatic temperature control sensor cylinders that allow roof vents to open and close at the appropriate time to ensure adequate airflow.

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