How much air needs to flow through the louvre?
It is worth considering that the actual area of Louvre System being installed to meet the screening requirements, might result in more ventilation than is actually needed. Some areas may even need to be blanked off.
However, this shouldn't stop you from clearly specifying your ventilation requirements.
Whether you're specifying a Louvre System for natural or forced ventilation, you need to know the resistance to airflow caused by the Louvre System for a given flow rate.
