Automatic Louvre Vent Opener - Louvrematic - Automatic Louvre Vent Opener - Louvrematic

Automatic Louvre Opener
Fits most aluminium and wooden greenhouses
Corrosion-resistant
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.