These drop-in bowls are only available on Custom Lavatories.
Topaz
Minimums: 19" deep Lavatory 12 1/2" from wall end to bowl center 13" from open end to bowl center
Drop-In Bar Sink
Minimums: 16" deep Lavatory 8 1/2" from wall end to bowl center 9" from open end to bowl center
Template (PDF)