Note the smallest measurement as it will be the one you use step 3 measure for height.
How to measure for window shades and blinds.
Step 1 be sure to measure accurately.
Make sure you hold both ends of the tape on the inside edges of the recess.
If your window does not have a sill measure to the point you would like the blind to reach.
Measure the inside of the window frame in three places for width.
Across the top middle and bottom.
1 measure the width inside the window opening at the top and round down to the nearest 1 8 measurement.
But mistakes in measurements can ruin them altogether step 2 measure for width.
If the window is set in a deep recess fitting the blind inside makes for a neat finish.
Inside mount treatments are installed inside the window casing.
How to measure for inside mount blinds and shades 1.
Do not take deductions.
At the left middle and right side.
At the top at the middle and at the bottom.
2 measure the height inside the window opening from the top of the window opening to the window sill.
Use a metal tape measure to measure accurately to the nearest 1 8th inch.