I've seen that issue as well 3ft windows get framed 30" 4ft , windows 40" etc.....  so I use a modified System like Glen showed, it won't change existing windows as noted ( new windows will ) but if setup in your Template it does..... the Label will ignore the Width and Height in the Schedule if it is in the Windows Default Properties already.   *note.... the Schedule Number does not show until you place a Schedule in Plan. And it will double line the Schedule if you Format the Default Label like Mine, (below) which some may not like.   this is in X9.....but Works in X10 too , in X10 I didn't need to add the " for Inches it does it for you.