The seats are a full 24" wide, allowing for some wiggle room. Let me know what you think!
Great looking chairs! I found a template set on Woodcraft under "Finishes" and General Finishes and ordered them. Really like the back slat configuration. Take a look at the template, I think you'll like it if you plan to build more.
Ed, Nice chairs. Look almost too pretty to use. Here is my version of an Adirondack Chair. The chair is two pieces.