Interior screws are exposed
Schlage Panic Proof Keyed Entry Knob set
Unlocked/locked by key outside or by turn-button inside.
Inside knob always free (Panic Proof).
Unit is non-handed and field reversible.
Faceplates (Part 16-211): Supplied with 1/4 Inches Round Corner, Square Corner and Drive-In Faceplates
Strike Plates (Part 10-063): Supplied with Square Corner and Round Corner Full Lip Strike Plates (Dimensions: 2-1/4 Inches x 1-5/8 Inches)