A controlled climate and a temperature range between ~ +15 °C to ~ +30 °C ensure a safe growth of most plants. It may happen, however, that these limits are exceeded. Are you always at home when the sun shines too hot? Do you always pay attention to ventilation, which is important for the soil?

The automatic window opener takes care of this responsibility. The temperature can be controlled from ~ +15 to +30 °C by simply turning the cylinder. The temperature-depending expansion fluid contained in the cylinder opens the vent with a lifting capacity of up to 7 kg. Opening width: ~ 45.0 cm. Two steel springs will rapidly close the vent in case of the slightest temperature drop. This is very important when using hollow-design boards since the counterpressure is very low.

Protected at last against moody weather, especially in the case of delicate plants.