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Gardening Naturally UK£27.99Visit shop Xl Greenhouse Autovent Bayliss
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B&Q£29.99Visit shop B&Q - Bayliss Xl Autovent Clip On Greenhouse Vent Opener For Hinged Vents
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The Bayliss XL Greenhouse Autovent is designed for hobbyist and professional gardeners who want to maintain optimal greenhouse climates without electricity. Its primary benefit is the automated, temperature-sensitive regulation of airflow that prevents plants from overheating during sunny periods. While highly effective, users should note that the device requires manual calibration and may necessitate specialized brackets for specific greenhouse brands like Halls or Robinsons.
| Model Part Number | Bayliss XL |
|---|---|
| Brand | Bayliss |
No, the Bayliss XL Autovent is a purely mechanical device powered by a heat-sensitive wax cylinder.
The unit is designed to lift vent frames weighing up to 5.5kg (12lbs).
It fits most standard greenhouse frames, but specific models like Halls or Robinsons may require additional mounting parts.
The maximum opening distance is approximately 12 inches.
It is recommended to remove or secure the cylinder during winter to prevent damage from extreme cold and strong winds.
Yes, you can fine-tune the operation using the adjustment screw on the cylinder.
Check if the vent hinge is stiff or obstructed; ensure the wax cylinder is properly seated and not jammed.
Verify there is no debris preventing the piston from retracting and ensure the mounting clip is not shifted out of position.
Adjust the threaded adjuster on the cylinder to calibrate the temperature at which the wax expands and activates the vent.
Installation involves securing the unit to your greenhouse frame and the vent bar using the provided clip-on mechanism. Ensure the vent hinges are free-moving and lubricated. Compatibility is broad, but owners of Halls or Robinsons greenhouse models should verify if proprietary adapter brackets are needed before beginning. For routine care, wipe the cylinder and piston with a clean, dry cloth to remove dirt or debris. In late autumn, detach the cylinder or secure the vent to prevent wind damage during winter storms, and store the unit in a frost-free area if your region experiences extreme freezing temperatures.
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