How to Measure for 90-Degree Corner Windows
Wondering how to measure those two windows in the corner? It’s simple. Measure both windows as you would a regular window, with a few quick adjustments to suit your aesthetic or privacy needs, and to ensure the blinds operate smoothly without interfering with each other.
1. Under the "Specifications" tab at the bottom of the product page for the blind or shade you're ordering, find the minimum flush mount depth in the chart. (You can also find it under the "Measure & Install" tab.) Be sure you use the correct depth measurement for the type of lift system (cordless, top down bottom up, motorized, etc.) you've selected.
2. Measure the width across the inside top of each window all the way into the corner.
3. Decide which window the "butt" blind will hang on, and which one you'll want the "full" or "through" blind to go on. The through blind will be mounted all the way into the corner where your windows meet, so it bypasses the butt blind. The end of the headrail of the butt blind will "butt" up to it, with a slight light gap between them. (Gap will vary by product)
For less of a light gap (and more light blockage and privacy), deduct the flush mount depth from the width of the butt blind and enter that measurement as your width. See above.
If you don't mind a little light gap, deduct the flush mount depth from the width of both windows. This is generally considered more aesthetically pleasing, but will be more noticeable. See above.
4. Double-check all of your measurements, rounding the width of each window up or down to the nearest 1/8". (Automatic deductions are taken on inside mount products at the factory to ensure a proper fit.)
5. Measure the height of each window.
6. Enter the width and height of each window to your measurements. Be sure you've selected Inside Mount for mount type when ordering.