With the Juliana automatic window openers you can be sure of an even temperature in your greenhouse day and night. To be continuously controlled from 62-73º F (17-23º C).
Features:
- Made for use with polycarbonate greenhouses
- Spring loaded
- Allows thermostatic control of roof vents
- Made in Denmark
- Note: Take care to remove the cylinder during periods with frost as the openers may try to open the windows when the sun warms up the cylinders. If the windows are frozen, this may cause the cylinders to burst due to their demand for getting rid of their surplus energy.
Helpful Greenhouse Advice
About Juliana Greenhouses
Juliana has specialized in hobby greenhouses since its founding in 1963. Today, Juliana is the leading European manufacturer of hobby greenhouses, exporting products to 20 countries worldwide. No matter what size greenhouse is right for you and your garden, Juliana greenhouses offer exceptional quality for years of gardening pleasure!
We Now Ship to Canada!
Ships to Canada
