RootCellar is the premier refrigerated pantry designed for homes and homeowner lifestyles. An efficiently sized walk-in refrigerator that integrates with your kitchen design and decor. When it's time to build or renovate, no other appliance or amenity offers more function or convenience.
Here’s another company that sells them!
https://www.rootcellarconcepts.com/
I found this company that sells walk-in cold (or freezer) pantries.