Busse's Lock Service, LLC: 
                        2003 Wake Forest Rd, Raleigh, NC 27608



Underwriter’s Laboratory. This insurance industry agency tests and rates products for safety and functionality. Every electrical appliance in your home carries a UL approval tag, showing that meets minimum safety standards. UL also issues ratings to safes for burglary-resistivity and fire-resistivity. Even some locks (those installed on insulated fire doors) must be UL rated for that purpose!