INSIDE MOUNT:
Measure inside width of window opening at the top, center, and bottom opening to the nearest eight of an inch (1/8"). Submit narrowest measurement. Factory will make all necessary deductions for inside mount.

Measure inside height of window opening to the nearest eight of an inch (1/8"). Submit the longest measurement. No deductions will be made from height by the factory.

OUTSIDE MOUNT:

Measure width of window opening. Add sufficient overlap to satisfy design considerations. Submit finished shade width. Factory will make no allowances.

Measure height of window opening. Add sufficient overlap to satisfy design considerations, and to allow for installation brackets. Submit finished shades height. Factory will make no allowances.