Automatic Greenhouse Window Opener - Temperature Activated Vent Opener For Greenhouses & Sheds

Gardeners and greenhouse owners, this automatic window opener is seriously clever - it uses temperature changes to open and close your vents without any electricity or batteries!

The aluminum construction won't rust, and it can handle windows up to 55 pounds.

Here's how it works: when the temperature inside hits about 63-78°F, the hydraulic cylinder starts expanding and pushes the window open.

By the time it reaches 86-90°F, your window is fully open for maximum ventilation.

When things cool down, the heavy-duty spring provides 33 pounds of closing force to shut it back up.

The 13.4-inch support bar gives plenty of leverage, and the whole thing only weighs about 12 ounces.

Installation is straightforward with all the screws and mounting hardware included - you can use clamps or screw it directly onto your frame.

The spring and support bar work together to protect against wind damage too.

Perfect for greenhouses, sheds, chicken coops, or any building that needs automatic temperature control.

It's one of those simple, reliable devices that just works season after season, keeping your plants from overheating without you having to constantly monitor things.

Seriously, if you've ever come home to find your greenhouse turned into an oven, this little gadget will save your plants and your peace of mind!