The 5'-9" height units are "cottage style" units, and have unequal sash. 
The top sash is shorter than the bottom sash.
* These sizes are available in white color only. 
** Unobstructed glass height is for single sash only. 
• "Unit Dimension" always refers to outside frame to frame dimension. 
• Dimensions in parentheses are in millimeters. 
• When ordering, be sure to specify color desired: white, Sandtone, or Terratone®.