Dual Spring Automatic Roof Vent Opener for Greenhouses (Up to 30lbs)

Core Features

Automatic Window Opener Prevents Hobby Greenhouse Overheating

Auto Open/Closed Technology: No power needed, no batteries, and no electrical power required. This unique window opener relies on simple, efficient mechanics to keep your greenhouse just right.

Ideal for Your Greenhouse: Perfect for greenhouse windows, walls, and hobby vents, especially in high-wind situations. It's suitable for a variety of greenhouses including Harmony, Hybrid, Mythos, Octave, Balance, Essence, Americana, Victory, Glory, Bella, and Lean To Grow House 8x4 Silver Line, Inter Line, and Multi Line.

Intelligent Temperature Control: Starts opening between 59°F and 77°F to prevent overheating. No need to manually adjust the vents, ensuring a consistent and optimal temperature for your plants.

Easy Installation: Simply screw directly into polycarbonate panels, wood, or metal frames. User-friendly design for hassle-free setup.

Keep your hobby greenhouse comfortable and well-ventilated with this simple, efficient, and power-free solution.