Calculation tools

Actuator Finder — Find your opening areas and best actuator

This tool will help you find just the right window actuator, as well as the geometric opening area. You can also download product data and specification documents through this tool.

This tool will help you get

Window actuator
Geometric opening area
Opening angle
Stroke length
Pull & push forces
Mounting drawings

Try the ActuatorFinder

Air Change Rate Calculator — Calculate the ventilation rate for your project

Verify the ventilation rate of your design with this calculator. Based on your input, it will calculate an estimate of the air change rate in a room at the least favorable wind conditions.

This tool will help you get

Ventilation rate
Design verification

Try the Air Change Rate calculator

Dimensioning tool of natural ventilation — Calculate an estimation of the required opening area for natural ventilation

With a few minutes this simple tool will get you an estimate of the required opening area for natural ventilation for a specific room. The calculations are based on your ventilation/cooling demand.

This tool will help you get

Geometric opening area
Effective opening area
Number of openings

Try the Dimensioning tool

Calculation tools

Find your opening areas and best actuator

Calculate the ventilation rate for your project

Need more guidance for the early design phase?

Calculate an estimation of the required opening area for natural ventilation

Read more about designing with natural ventilation