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Help! My Cellular Shade doesn’t fit

Posted on: June 28, 2012

Today I spoke to a husband and wife whose shade did not fit.


What happened in the fifty minutes we were on the phone? It was discovered that the window’s frame — with its depth of more than 4 1/2-inches — beveled outwards. In fact, it was nearly a half-inch wider at the back than at the front of the opening.

There lay their measuring problem!

Their particular shades were CORDLESS — these have a headrail that looks like this:




of bracket

(highlighted by solid black lines)



2 and 1/4 -inches

Therefore, if you’re inserting a “square” (the shade) into a V (the window opening) – measurements have to be taken not only in three places – top, center, bottom – but also at the narrowest edge. If you measure farther back, the shade will be too wide at the front to fit properly.

In preparation for writing this blog post, I was hoping to find some photo of this very type of window. Frankly, I was more used to the frame fanning out into the room:

Here, you can see just how much wider at the room’s edge the opening is than right at the window’s edge. Imagine, though, less of a steep angle, and the wider end inverted so it is at the exterior edge — and you will envision why this couple had measuring problems.

At this window, the natural impulse would be to measure close to the window. The cellular shade would fit — thanks to the brackets going across the headrail! — but you would see a slight gap, and a bit of a “wedge-shaped” one, at the sides.

The couple I spoke with would have the opposite “visual”, in that the gap would be more noticed if one looked through the window.

In searching online for pictures, I came across this description on a Vinyl Window website: “Unique beveled-in exterior frame creates depth and interest”. The site doesn’t mention that frustration might be created as well.

When in doubt, a T-Square and a plumb line might help you envision how the object — a Cellular Shade — needs to fit into your given opening. The T-Square will detect when the depth is not “flat depth” and the plumb line could aid in giving “visual” lines to represent sides of the shade.


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