Reliable thermal greenhouse ventilation control
The VentaPro is a robust automatic greenhouse window opener designed for precise climate management. It utilizes a thermal expansion cylinder to adjust roof windows based on internal heat levels. This mechanism operates entirely without electricity for consistent, passive performance.
Solving greenhouse overheating without electricity
Greenhouses can quickly reach damaging temperatures on sunny days, threatening plant health. Manual ventilation is often inconsistent and requires constant monitoring by the gardener.
The VentaPro solves this by automatically opening roof windows as temperatures rise above 17°C. By using thermal expansion, it provides a reliable, electricity-free solution that maintains a stable growing environment.
Technical specifications
- Activation temperature: Above 17°C
- Optimal operating range: 17°C to 25°C
- Maximum lifting capacity: 24 kg
- Maximum lifting height: 45 cm
- Material: Aluminium
- Colour: Black
Versatile greenhouse ventilation compatibility
This opener is engineered for compatibility with most standard greenhouse roof and wall window systems. Its durable aluminium construction allows for seamless integration into various frame types. For those needing additional hardware, we also offer a universal handle for greenhouse to complete your setup.
Important information
- Winter Care If using automatic window openers (e.g., in greenhouses), remove the cylinder when temperatures drop below 0°C. Clean, lightly lubricate, and store it in a warm, dry place to prevent frost damage and ensure it works next season.
Use cases and compatibility
This opener is perfect for gardeners seeking automated, passive ventilation in standard greenhouses to ensure consistent airflow for healthy plants during warm, sunny weather conditions.
If your greenhouse windows exceed the 24 kg lifting capacity, consider a heavy-duty alternative. You may also explore the Univent for different mechanical requirements.
You must remove the actuator cylinder when temperatures drop below 0°C. Proper winter storage prevents frost damage and ensures the mechanism functions correctly for the next season.





