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Louvre Air Flow Rate Calculator
If you need to measure how much air flows through a Building, our free Louvre Flow Rate Calculator is here to help!
This calculator makes it easy to out the flow rate, which tells you how quickly air moves.
Knowing the flow rate is important for many jobs, like air flow management and HVAC systems.
With our tool, you can quickly get the information you need without any complicated math. Just enter your values, and the calculator does the rest!
Best of all, this calculator is completely free to use!
You don’t have to sign up or download anything. You can access it anytime you want, making it a handy tool for your needs.
Plus, it can help save you time and effort when trying to figure out flow rates for your projects.
So why not give it a try? Explore the Louvre Flow Rate Calculator today, and see how much easier measuring air flow rates can be!

Louvre Airflow Calculator
Calculate the free area and airflow capacity of your Invicta louvre installation
Select A Louvre Model & Enter Dimensions To Calculate Airflow.
| Model | Aerodynamic | Rain Defence | Free Open Area | Best For |
|---|---|---|---|---|
| THOR | Class 2 | Class C | 60% FOA | 100mm blade pitch, high airflow performance |
| ZEUS | Class 2 | Class B | 62% FOA | 150mm blade pitch, maximum free area |
| ZEUS HYDRA | Class 3 | Class A | 31% FOA | 150mm blade pitch, superior rain defence |
| MAGNI | Class 2 | Class D | 58% FOA | 50mm blade pitch, compact high-performance design |
| MEDUSA | Class 3 | Class A | 42% FOA | Enhanced rain defence with good airflow |