The Vitavia Automatic Vent Opener will open and close your greenhouse vents with precision therefore ensuring your greenhouse has automated aeration without the need of electricity. Roof vents are very effective in maintaining the appropriate humidity and temperature levels in your greenhouse so this automatic opener is ideal for when you are away from home and vents can not be opened manually. The plant oil inside the piston expands and retracts with temperature fluctuations and therefore pushes the window up to 45cm. The aluminium jacks are easy to use and can be fitted in the roof window without the need for drilling. This product is only compatible with Vitavia greenhouses.

Dimensions

Length: 32cm (13in)
Width: 2cm (0.8in)