Universal Hardware's Storeroom Keyed Entry Knob always requires a key to open the door from the outside. The deadlocking latch bolt is operated by the inside knob at all times. Designed with a tubular chassis for light commercial and residential uses. This lever fits doors from 1-3/8” to 2” thick. It has a 3 hour UL fire rating and exceeds ANSI Grade 2 standards.
Universal Hardware Light Duty Knob Installation