About
Smart Ventilation. Zero Effort.
UNIVENT is one of the most trusted and top-rated automated window openers among greenhouse and orangery owners. This compact and reliable solution provides automatic temperature regulation - ensuring your indoor environment is protected from both excessive heat and unexpected cold.
With UNIVENT, the need for manual ventilation throughout the day becomes obsolete. Its smart, self-operating mechanism opens the window as the internal temperature rises, and gradually closes it again as the temperature drops.
Whether used in a private greenhouse or a commercial conservatory, UNIVENT delivers efficient climate control with no electricity required - just smooth, silent performance in any season.
- Suitable for window sashes weighing up to 14 kg
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Automatic opening temperature range: 17 – 25 °C
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Material/Finish: mill-finish aluminium
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Weight: 0.5 kg
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Includes installation instructions (see section below)
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Origin: Made in Denmark
Installation Guide for UNIVENT in Gardenis Greenhouses and Orangeries
Installing the UNIVENT automated window opener in your Gardenis greenhouse or orangery is a straightforward process that ensures reliable, maintenance-free ventilation.
Follow these steps for proper installation:
1. Prepare the Window
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Ensure the window opens freely and is well-balanced.
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The UNIVENT is best suited for top-hinged or side-hinged vents.
2. Position the Opener
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Mount the main cylinder (with the piston) to the window frame (moving part).
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Attach the bracket arm to the fixed greenhouse structure (wall or roof profile).
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Make sure the mechanism aligns properly and allows smooth opening/closing without resistance.
3. Fixing the Components
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Use the supplied stainless steel fasteners to secure the opener.
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Adjust positioning to suit your preferred ventilation range (typically fully opens around 25 °C).
4. Test the Movement
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Gently open and close the window manually to ensure smooth movement of the piston.
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Leave the vent partially open — as the temperature rises, the UNIVENT will begin to operate automatically.
5. Seasonal Adjustment
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You may fine-tune the temperature activation range by adjusting the tension screw
- Before winter, we recommend removing the cylinder and storing it in a dry, frost-free indoor space. This extends the product’s life and ensures optimal performance in the next season.


















