Vitavia Automatic window regulator Ventomax

The automatic window openers ensure the automatic opening and closing of your greenhouse windows, without the need for electricity and with precision: The plant-based wax inside the cylinder expands depending on the temperature, pushing the window open by up to 45 cm. The temperature range can also be set, allowing for adjustments for summer and winter. The aluminum lifters are easy to install in the roof window without drilling, available in various colors, and fit all common greenhouse brands.