I achieved a similar look by insetting some ikea mirrors/medicine cabinets. turned out really well.

it looks cutom because of the large single piece over the toilet.

I agree with agould though, if you dont mind having a double door over the toiler area then get 2 godmorgen cabinets from ikea and butt them up against each other.

We are goign to do this in our bathroom for 88 inches of mirrors spread over 4 doors.

It would really be helpful if Houzz would identify the manufacturers and retailers of sinks, medicine chests, toilets, etc. that are depicted in these photographs.

This was custom made.