I want to install blinds on a window that has a 27.5-inch width. But it looks as though 27.5inches is not a standard width; it's easy to find widths of 23, 27, 29, 30, I don't see 27.5 inch blinds anywhere. I did just find these 27 inch blinds, however. Is there a DIY way to customize 27 inch blinds so that they can be installed on a 27.5-inch wide window? Alternatively, would buying 28-29 inch blinds, and sawing them down to 27.5 inches work?

Please remember to keep answers specific to the problem at hand. Thanks.

1 Answer 1


Those 27 inch blinds you link to are top mount and will fit in a 27.5 inch opening without modification. But there are also side mount ones that would also work but you would need to add a 1/4 inch shim to both sides or a 1/2 inch shim to one side.

Most blinds can't be simply cut down in width except those that are designed to be cut to length.

  • I see unfinished wood shims are available, but the color would contrast with my white walls. What about plummer's putty?
    – Identity
    Feb 10, 2014 at 1:10

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