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