Not sure how these were made.. Used to be done on demand with custom text. I originally thought sublimation, but the close-up pics seem to look a little too 'wet'? Sizes can be up to 36" or more. Wood is even a little rough and not sanded before process. This one is about 24x30". 4 boards about 6" wide, but close up of the seams appear to show it was done as 1 image?