You can count on Fieger

With our Calculator Tool you can work out for yourself which louvre window will best meet your project requirements. Just type in the relevant information on the left hand side and the results will be displayed on the right. You can even print out a copy.

Calculator Tool

System Choice


with Centre Mullion

Calculated Values

Louvre specifications at a glance

For your information:
Heights and widths are stated in mm, U-values in W/m²K, Edge Seal Type in W/mK, Wind Pressure in N/m², A aero and A geom in

System NSHEV Vents Width/Height Vents/-height U Edge Seal Type A geom(Tot) A aero(Tot) U-value/U-value+

Important note:

These are non-binding standard calculations. Displayed values are for guidance only and do not constitute an offer.
For questions please contact us by phone or via e-mail!

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