Dorex TL15 Medium-Duty Exit Knob – Stainless SteelTL15 B C32D Exit only function suitable for non locking applications Blank escutcheon rosette on exterior side Architectural quality for medium duty commercial applications High quality stainless steel finish For 1 3 8 to 1 3 4 door thickness 2 3 4 backset Optional backsets by special order: 2 3 8, 3 3 4, 5 Non handed field reversible Knob diameter is approximately 2 1 8 3 rosette diameter 1 2 stainless steel latch throw Concealed mounting screws