Increase the air circulation in your Rion by Palram-Canopia Hobby/Grand Gardener greenhouses. Supplement your greenhouse with an additional air vent to reduce humidity and improve air circulation to keep your greenhouse cooler on warm days.

Highlights:

• Provides additional air ventilation
• Helps regulate temperature and humidity levels
• Manual adjustment for variable airflow
• Can be fitted with the Rion automatic roof vent opener for optimal airflow