Schlage, FA51-AND, Keyed Entry, Andover, Knobset, Single Cylinder, Andover Keyed Entry Panic Proof Door Knob Set Featuring Decorative Rosettes New F51A Panic Proof Function: This new and improved panic proof function will now unlock when the door is opened from the inside, allowing a quick and convenient exit. Schlage has recently launched a product conversion. This keyed door knob set features decorative rosettes that conceal the screws. There is another Andover Keyed Entry Door Knob Set on our site but it features a simple plain rosette and does not conceal the screws (that model number is: F51A-AND). Schlage Panic Proof Keyed Entry Knob set. Unlocked/locked by key outside or by turn-button inside. Decorative Rosettes Screws are Concealed Inside knob always free (Panic Proof). Faceplates (Part 16-211): Supplied with 1/4 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 x 1-5/8)