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How to Measure for Blinds Mounted Outside the Window

Outside mounting occurs outside the window frame and covers the complete window frame, overlapping to the wall outside the frame. Outside mounting works for nearly any style of window covering since you are simply mounting it to the wall around the window.

3 Measurements: Width x Height x Depth

Measure and record these 3 dimensions in that order. Width is horizontal (across the window), height is vertical (up and down), and depth will be a few inches straight back into the window pane.


How Much Overlap To Include?

Consider how much privacy and light control you want in order to get the right outside mount coverage and enough overlapping on the sides. You want to maintain your privacy and cover the whole window fully. The more coverage, the less light seepage from gaps on the sides.


A Note on Height Consider Your Hardware

The hardware height must be added to the height you choose, so the blind will not be too short when installed. Also, if you choose a valance, you won't want it to be too low where it will hang down into the open window.



*Take into account any obstructions near the window such as cabinets, bookcases or counters.

Mounting On the Wall or Ceiling?

You will mount on the drywall above the window opening or above any existing trim. Take into account obstructions around the window such as trim depth, AC units, and window cranks.

Mounting on the Window Trim?

You can mount your blinds to the trim as long as it is flat and meets the minimum requirements for an outside mount.

Mounting on the trim of the window is the easiest route because all you need to collect is the size of the trim dimensions. Also, trim mounted blinds fit the architectural lines of the window and look custom.

We have helpful measuring guides for any style of window treatment

measuring guides