Velux Daylight analysis

[Mats_Knutsson]

Hi,
I've been told to use the square root from the LT value when exporting ArchiCAD models because the windows exported from ArchiCAD has two sides. Is there anyone who could illuminate a little? Does Velyx Daylight use only a glass plane.
Wierd question..I know...but would be interesting to know for the projects where we are on the absolute edge regarding the dayligt.
Mats

[eldhead]

I have learned to erase one glass in Sketchup before Import to Daylight Visualizer. (Archicad saved to Sketchup).