The Canopia Automatic Louvre Opener is a helpful greenhouse accessory that can be fitted to louvre windows to automatically open and close the window to help regulate the temperature in your greenhouse. Once fitted, simply set the thermostat at the optimum temperature and then when the temperature in the greenhouse starts to exceed this, it automatically opens the louvre slats to allow the hot air to escape and prevent excessive heat build up. As the temperature cools back down, it automatically closes. The Automatic Louvre Vent Opener is easy to install and is supplied with full instructions. Suitable for use with Rion and Canopia by Palram louvre windows. 

• Programmable
• Automatically opens at a pre-set temperature
• Mechanical system - no electricity required
• Automatic response to weather changes