Electrical Types: Help Finding a Replacement Floor Outlet Cover

So, I'm an idiot (understatement and stating the obvious).

We replaced our floors recently and have two single receptacle floor outlets in our living room. I tossed the outlet covers when I pulled up the old floors thinking I'd find new ones to replace them. Now I'm having a very difficult time finding the correct size/manufacturer to replace the covers.

I've contacted Thomas&Betts/Steel City, Hubbell, and Walker/Wiremold and none of these recognize the outlet box as theirs.

So now I'm trying to figure out my next options. It's a concrete slab with hardwood on top. Can I somehow remove the old box, make the hole bigger, and rewire with a newer/larger box that I can source locally?

Any other options??