Solar Automatic Window Opener for Greenhouse Heat Sensitive Auto Greenhouse Vent Opener Greenhouse Accessories Hothouse Roof Vent Kit-Lifts 15 Lbs

I am very disappointed as we finally tried to install this product and there is basically zero directions. As well as the spring snapped in the lever and it broke before we could even install. And it is past the return time so we are stuck with broken product that is uninstallable. I'm pretty disappointed.