GLOGLOW Greenhouse Automatic Window Opener Auto Vent Replacement for Gardman Vents Temperature Controlled Sensor Automatic Window Opener
- Non electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops..
- High sensitive, automatic respond to weather changes, so you don't need to stay near the greenhouse. As the temperature changes automatically,....
- This is a replacement cylinder for automatic window opener. Deal for your greenhouse window--opens and closes your greenhouse window..
- Window opener for greenhouse can time saving, also can supply a better temperature condition of plant's growth..
- Great for most greenhouse to open or close window automatically. Adjustable for different opening heights and mountable two different ways, taking up....