While this appears to be custom panels sized just right for a built-in Sub Zero, we bet the idea could be dumbed down (and cheapened up) for a do-it-yourself project. Old tin ceiling panels can be had pretty commonly at antique shops. Or, for DIY punched metal, thin tin sheets can be purchased at the right size. Punch your own design into them with a set of tin punches (an ice pick will do) and hammer, and seal it to prevent rusting.
Image: Decor Magazine via Laura Casey Interiors