Run Numbers Matter – More

When you hang wallpaper, you need to make sure that all the rolls / bolts are from the same Run Number / Batch Number / Dye Lot. This means that the rolls were printed at the same time from the same batch of ink.
Another batch of ink that’s mixed up and then printed a few weeks later may be a very slightly different shade. You can easily see that color difference in this photo.
Placing strips from two different runs next to each other on the same wall will result in a subtle but unpleasant striped effect.
Besides the color differences of the ink, the printing press can be positioned differently, too.
Look at the bottom strip, at the left of the photo. The vertical line on the left is wide.
But now look at the strip on the right, which is on top. It’s from a different Run.
Here the vertical strips is narrow.
If strips of wallpaper from these two different runs were placed next to each other on a wall, not only would you see a color difference between them, but you would have an unpleasant striped effect, because one vertical stripe element in the design would be unnaturally wide, and another would be much narrower. In between would be other stripes that are the standard medium width.
Very un-uniform and very un-pleasing.
Before any wallpaper rolls get cut, pasted, and stuck to the wall, check to be sure the run numbers are all the same!

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