That is normal installation practice. If it bugs you, then have your KD order a tall skin to cover the whole underside of your upper cabinets. It shouldn't cost that much extra to have that installed, and you'll be happier when you clean. Of course, you'll still have the gap on the top of the cabinets that dead insects and dust can fall in and become trapped by the lower panel instead of falling all the way through the gap, so you may want to do the same with the uppers or cover them with newpapers behind the crown molding.

Typical....I have the same thing and I don't worry about it. Not only will someone to pretty much have to be a contortionist to see the gaps, but if someone wants to find fault w/my kitchen so badly....let them have at it! If that's the worst they find then I don't mind!

Thank you live wire oak and buehl. I just mentioned the gaps to DD and the first word out of her mouth was spiders. I probably shouldn't have told her because she would never have known otherwise. Oh well, I guess I'll ask the installer to put that skin over the underside when he gets back here to do the appliance panels. At least I know now that this is typical and not something he overlooked. Thanks again.