This is the white enameled steel cabinet stand for a Westinghouse roaster oven from the 1940s and 1950s (it will probably fit Nesco ovens and others from that era as well). It sits on rollers, and though quite heavy it moves about easily. The cabinet door opens up to reveal two roomy storage shelves for your pots & pans or small appliances.
It measures 20-1/2" wide by 28-1/2" tall by 14-1/2 inches deep. The Westinghouse roaster oven fits on top perfectly, when in place it looks like a single unit. The condition is very good for its age, super-clean with minimal wear. You can see most of it in the pictures. I've shown a closeup of the worst ding, it's at the back lower right bottom. There are some light scratches and scuff marks here and there, none that I'd consider major. The interior shelves have been covered in green faux linen contact paper. The roaster oven shown in the last photo isn't included of course, but is for sale elsewhere in my shop.
The cabinet would make a wonderful microwave stand, or if your vintage kitchen doesn't have such a modern convenience, the top could display all sorts of collections with the bottom used for storage.