Universal Hardware Universal Hardware Light Duty Commercial Storeroom Knob, UL 3-Hr Fire ANSI Grade 2, Matte Black Finish

The Universal Hardware Storeroom Keyed Entry Knob always requires a key to open the door from exterior. The deadlocking latch bolt is operated by the interior knob at all times. This door knob fits doors 1-3/8 in. to 2 in. thick. It has a 3 hour UL fire rating and exceeds ANSI Grade 2 standards.