The Auto Vent Kit conveniently opens the window vent to your Snap & Grow, Mythos, Essence or Grow & Store Hobby Greenhouse. It’s simple to put in and no electricity is needed. There’s a liquid within the cylinder that expands as the temperature nears 70 degrees causing the vent to open. As the temperature drops the vent will close. Let the Auto Vent do the give you the results you want.
Opens routinely when temperature rises
Installs quickly and easily
Easy, oil-filled cylinder, no power needed
Replaces manual vent arm