Technical - Performance

This page details how to calculate the aerodynamic resistances and Physical Free Areas of the Gill Air Louvres.

To find the resistance to air flow, due to the insertion of a louvre into an opening, a 'Ce/Cd' or 'K' factor must be used.

The physical free area is not relevant to resistance, as it is taken into account by the co-efficient or aerodynamic factor.

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