Product code: ESP2466
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Automatic Louvre Opener
Fits most aluminium and wooden greenhouses
Quality, reliable opener
Use this automatic opener to open your greenhouse louvre window according to the temperature, to ventilate your greenhouse more effectively. This works using a wax cylinder, that contracts and expands according to the temperature, and this opens and closes the mechanism automatically. Simply fit this to the vent handle and the greenhouse frame - no electricity or batteries are required.