This is also the best place to put a couch in ... Even some new construction does this. If you take the register off, I think you'll find that things are completely unfinished behind it.

The Kitchen Cabinet Manufacturers Association administers the ANSI/KCMA A161.1-2017 Performance & Construction Standard for Kitchen and Vanity Cabinets. “The KCMA A161.1 standard is unique in ...