I really like this wall covering.  It was easy to install.  I used the Wayfair calculator to figure the number of rolls and it was not accurate because it did not allow for the large pattern repeat or the fact that not each roll started at the same place in the pattern resulting in a shortage. I was short by one roll and when I ordered another unit, I could not get the same dye lot.  The additional roll is a little darker than the original order.   Always order an extra roll.  Ugh!