I have an All-refrigerator and All-freezer by Frigidaire.
19 cf each
Even without the trim it looks like 1 unit, side by side. In total it's 5' wide.
In my 15 years with this model, I've replaced the fridge 2x and the freezer once. Unrepairable mechanical issues.
The drawer clips are weak. On some shelves the metal of the shelf brackets are peeling their coating.
But:
I love the room! A usual side by side of 25 cf may have 10 cf freezer and 15 cf fridge. And a narrow freezer. Mine has 19 cf each. And the layout makes things easily accessible. My interior is over 5 feet high and over 2 feet wide. Each - fridge and freezer.
Maybe there's a better brand that makes something like this, but as of a few years ago, all the usual brands that carried this had the guts made by Frigidaire.