Schlage F40 SIE 609 16-080 10-027 Siena Bed and Bath Knob, Antique Brass Use on a 1-3/8 in. To 1-3/4 in. Thick door Universal latch and triple option faceplate fit standard door preparations Privacy knob, with push-button lock, for use on an interior bathroom or bedroom door All-metal chassis for Durability Antique Brass finish Push button locking for use on bedroom and bathroom doors or doors requiring privacy Metal construction adds strength, security and durability Pin key included for easy unlocking Universal knob for right- or left-handed doors Easy installation, only a screwdriver is needed