Product review (3 stars): Not really 30" wide!
What a bummer!  This backsplash is NOT 30" wide, it's smaller, so you can see the wall on each side of the backsplash after installation. Luckily, I dry fit it first and discovered this, so I was able to return it to the store where I bought it. It should come with some kind of molding or trim to cover this, otherwise it looks ridiculous.  Other than that, the item was a nice and inexpensive solution.