Bayliss autovents automatically open and close hinged vents providing accurate and continuous ventilation 24/7. They are vital for perfect greenhouse growing.

Using the energy from the warmth of the sun the Autovents are designed to mechanically open the vents as the temperature increases. Similarly, as the temperature lowers so do the Autovents. They automatically open and close hinged vents. "Clip-on" model lifting a load of up to 5.5kg (12lbs) giving a maximum opening of approximately 12".

Please note that additional parts may be required to fit XL autovents to Halls, or Robinsons greenhouses.