The Heritage Brass Chelsea Door Knob on Rose Polished Chrome has an oval shaped knob which is a very popular design! The door knob is made from solid brass and has a polished brass finish. This finish will require regular cleaning with a soft cloth and non-abrasive wax polish. Matching Accessories for the Chelsea Door Knob Please note – when purchasing locks and latches to us with this knob we recommend that they have backsets no smaller than 76mm (with a 95mm case) to accommodate the size of the door knob. Larger sizes can be used to allow clearance of decorative edging on ...