Scroll over the image to view the sizes.
Standard vertical blind sizes.
If you have trim around your window simply measure to the far edges of your trim from left to right.
Measure the width of the area to be covered at the place where the headrail will be installed to the nearest 1 8.
We recommend adding 2 to 3 inches to each side.
To find the right size for inside mount blinds the most typical mounting method for any blind take three precise measurements for the width.
The width and length of the blind corresponds to standard window sizes.
Those slats are typically 1 2 inch deep and hung within the window frame.
From inner frame to inner frame at the top middle and bottom of the window noting the width to the nearest 1 8 inch.
To maintain the maximum view allow adequate overlap and consider the stack width.
Sizes most commonly ordered for vertical blinds.
If your window has no trim around it measure a distance from point a to point b that includes any extra width you may desire for light gap coverage and privacy.
Below is a heatmap of all vertical blinds sizes with the most common highlighted in red.