Commercial Leverset (Grade 1), Cal-Royal CGN09-US26D (Brushed Chrome), institution function supplied with 2 keys, includes 2-3/4 commercial backset. Lock function description (Institution): Outside and Inside lever always locked - entrance/exit by key only. Not to be used on fire exits. Please comply with local fire codes. Keying: Lock is supplied with 2 keys which work both inside and outside levers. If you need special keying please contact us for details.