Glazing (Glass) area of window

[ChiefuserMathews]

Is there a macro ruby command that I can add to my window schedule to calculate the glazing area of a window

[ChiefuserMathews]

Yes, My calculation would be height x width convert to sq.ft x 0.9 (for frame size) should be the glass area. 

[ChiefuserMathews]

6 minutes ago, solver said:

 

Then why not use that calculation?

 

This might also work.

 

Thanks Eric, this one worked. Previous one was return with 'zero' result

Thanks again for your quick response as usual.