Solid Brass Bern Door Knob Set With Disk Rosette - Made for modern doors - versatile, elegant, adaptable - this Solid Brass Bern style door knob set comes complete with a disk style rosette. This knob set with fit any door thickness between a standard 1 3/8 inch to a 2 1/4 inch thick. Functional sets come complete with the functioning hardware and a 2 3/8 inch backset is standard. A 2 3/4 inch backset is also available upon request.