Stop chasing the weather. This opener automatically vents heat on warm days and closes to lock in warmth when it’s cool—keeping your greenhouse steady year-round so your plants thrive.

Key Features:

Temperature-activated design opens vents at 60 to 77°F.

Dual-spring vents open up to 18 inches for better airflow, heat control, and stability.

Powder-coated aluminum and stainless steel for long-term durability and weather resistance.

Installs easily on most greenhouse roof vents and operates quietly while you’re away.

Always on duty—opens and closes automatically with the weather so your plants stay comfortable year-round.