Window treatments are installed to the ceiling.
Ceiling Mount
1. Measure Depth:
Measure at the depth within the frame where you'll install the brackets. Minimum 3 2/5 inches depth is required for Ceiling Mount. When install depth less than 2 15/16 inches, the shade will extend beyond the window frame.
2. Measure Width:
Measure the openness width across the top, middle and bottom to make more accurate, take note of the smallest measurement to 1/16 inch.
3. Measure Height:
Measure the height of window openness from top to sill across right, middle and left, take down the smallest one to 1/8 inch.
Note: Outdoor shades will have no deductions taken at the factory. They will be made according to your exact measurements.