Automatic ventilation is essential for the modern working greenhouse. Opening the vents in the greenhouse up when the temperature increases and you're not at home is vital to give you plants a stable growing enviroment.
Automatic solar-powered window opener in galvanised steel. Works by opening your greenhouse vent as the temperature in your greenhouse rises
Only £29.99More Details
The Louvrematic is a temperature controlled piston that opens your Louvre vent when the temperature in the greenhouse increase.
When the temperature falls again the vents shuts automatically
Only £31.99More Details