Measurement Tips

Inside Mount (IB) (when window has depth)
To find width, measure exact distance to the nearest 1/8” between inside surfaces of the window frame at the top, middle and bottom, and use the narrowest width. Do not make any deductions. Factory will make the appropriate deductions. To find height, measure exact distance to the nearest 1/8” from inside surface at the top of window to sill, at the left, middle and right, and use the longest height. If you prefer blind not to touch sill, deduct ¼”. If there is no sill, measure height to point where blind is to reach.

Outside Mount (OB) (when window has no depth)
To find width, measure exact distance to the nearest 1/8” between the outer most points where the blind is to be placed. For optimal light control, this measurement should extend ¾” beyond the window opening on each side (or 1 ½” for the entire width). To find height, measure the exact distance to the nearest 1/8” from where top of blind will be located to top of sill. If there is no sill or if blind is to overlap frame, measure to point blind is to reach.