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GLV
Automatic greenhouse ventilation that uses the power of the sun to open and close the band based on the temperature set. It works by using a wax cylinder which expands in the heat.
Comes complete with step by step instructions.
Fits most standard greenhouse louvre vents.
Opens windows from 17-25 degrees celcius.
The unit has an opening force of 12.5kg. and a max window weight up to 25kg
Made from aluminium zinc coated steel.
The mechanism itself without the cylinder is approx. L:14cm x H:5cm x D:4.5cm.
Designed by Gardening Naturally.
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