The Frelan Hardware Frosted Ball Glass Door Knob on Rose Polished Brass has a unique frosted glass ball knob.  This polished brass finish will need an occasional buffing with wax to maintain its original shine. The glass used for this door knob makes it a stand out fitting on any door in your home. Matching Accessories for the Frosted Ball Door Knob Please note – when purchasing locks and latches to us with this knob we recommend that they have backsets no smaller than 82mm (with a 102mm case) to accommodate the size of the door knob. Larger sizes can be used ...