ELECTRONIC ENTRY LEVER STN NKL Keyless entry providing enhanced security Reversible lever for use with doors that are either right hand open or left hand open Outside assembly - 6.84 inches tall, 3.01 inches wide, 2.74 inches deep; inside assembly- 5.75 inches tall, 3.01 inches wide, 2.77 inches deep Quickly add or delete user codes at keypad using the lock's unique 6-digit programming code Easy installation with no wiring required - 9-volt battery is included. For any further queries please contact Schlage Lock Company Customer Support Number @888-805-9837.