The Auto Vent Kit conveniently opens the window vent in your Snap & Grow, Mythos, Essence or Grow & Store Hobby Greenhouse. It is easy to install and no electricity is required. There is a liquid in 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 work for you.
The Auto Vent Kit conveniently opens the window vent in your Snap & Grow, Mythos, Essence or Grow & Store Hobby Greenhouse. It is easy to install and no electricity is required. There is a liquid in the cylinder that expands...
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