KNOBS Crystal Ellipse Round Traditional Contemporary Rustic (CRY) (ELL) (ROU) (TRA) (CON) (RUS) KNOB SPECIFICATIONS Door Preparation 2-1/8” cross bore. 1” edge bore for latch. Door Thickness 1-3/8” to 2” standard. Thick door optional for up to 2-1/2”. Cylinder Baldwin 5-pin C-Keyway. Backset Adjustable 2-3/8” or 2-3/4”. Front & Latch Square Corner Adjustable (SL) standard. Round Corner (RL), Drive In (DL), or 6 Way Adjustable (6L) optional. Strike Square Corner (SS) standard.