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When measuring window blinds for bay windows, you will need calculate the intersecting points of the blinds to determine the width of each piece. The first step is to select a window shade noting that different types of shades will have different depths. Once you have selected the blinds or shades, you will be able to get the depth you need to calculate the intersection point. See the product specifications for exact depths.

On bay window blinds, there will be a slight gap where the window treatments meet. Even with the most precise measurements, there will be light and privacy gaps. Follow these easy steps to measure your blinds:

Bay Window Blinds
  1. Cut two pieces of cardboard at the thickness of what the window blinds would be and approximately 12 inches long. Once again see the specific product specifications for the depth.
  2. Position the pieces of cardboard so the front edges meet as if they are the actual window blinds at each intersection point(See image).
  3. Make a small mark on the front edge where they intersect. Repeat the step for both blind intersection points.
  4. The next step is to measure each bow window blinds. The left blind measurement will be from the intersection point we marked to the window frame. Make sure that your measurement is an equal distance away from the window as the intersection point. Follow the same step for the right blind using the right intersection point.
  5. Measure the center bay blinds by measuring the distance from each intersection point
  6. Specify inside mount when ordering if you have the depth. See individual product description for minimum window frame depths.
  7. Call for any custom valance needs.


Blinds Chalet has more than 25 years of experience selling and installing window blinds. Attractive, high quality, and durable blinds and shades to fit any energy saving plan, decorating style, and budget. For information on what types of window shades, accessories, and any other window covering needs, visit

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