Large Panoramic Frames

[Red]

I've taken a shot for a car club, which I am selling to club members in a standard panoramic sixe (18x5). I'd like to point them to places they can buy frames, but for a supposedly standard size I can't find anywhere offering this as a size without paying the price for made to measure.

Anyone found anywhere that does this size? Or a make-to-measure place that is quite cheap?

[PhotosGuy]

Art supplies stores used to have frame packages (Frame-Ups) that included only two sides. You could mix the sides to get the format you wanted.