Solar Powered Automatic Vent Opener
This is quality product with preservative material. It can open and shut the window automatically in your greenhouse by different temperature, which means your greenhouse will get an even temperature in both day and night.
There is no battery or electricity needed for this product. It is also easy to set up. This auto vent opener will bring you a lot of convenience for you!
PLEASE NOTE: The degree of opening would be affected by the capacity and temperature adjustments!
1 x Automatic Solar Powered Vent Opener