11/01/2026
A cylindrical lever needs a 2-1/8 inch bore through the door face. A mortise cutout is a deep rectangular pocket, so the swap won't work by itself. Key Biscayne office managers replacing a worn mailroom lock should know the real options before buying hardware: a new mortise lock with lever trim, a conversion plate, or a re-prepped door.
https://ineedlocksmithmiami.com/key-biscayne-multi-tenant-office-mailroom-mortise-lock-vs-cylindrical-lever/