Bayliss Autovent MK7 Triple Spring Automatic Openers
The Bayliss Triple Spring automatic vent opener will open greenhouse windows by solar heat without using any electricity. As the power tube warms up in the sun the window is pushed open automatically. The 3 springs, as opposed to just 1 allow for more control in windy conditions and reduce vent flutter. These are the automatic vents that we use in our self- ventilating mini greenhouses.
Available Individually
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