SKU: GP-1100291 - US28B Black. Single bore. Knob outside, lever inside. Slide lock on inside rose. For 5/8" to 1-1/8" thick doors. 1" backset from stop on door jamb to center of spindle. Requires 15/16" diameter crossbore. 1-3/4" knob diameter. 1-7/8" rose diameter. 2-1/4" lever length. 2" lever pro..