CAN/CGSB-69.28-M90

This National Standard of Canada is equivalent to American National Standards Institute standard ANSI/BHMA A156.12-1986. 1.1 This Standard establishes the requirements for Interconnected Locks and includes operational tests, security tests, cycle tests, finish tests and dimensional criteria. 1.2 Tests described in this Standard are performed under laboratory conditions. In actual usage, results may vary because of installation, maintenance and environmental conditions. 1.3 When interconnected locks are used in fire door assemblies, they shall have been tested and listed for use in fire doors by a nationally recognized independent testing laboratory and shall be under an in-plant follow-up inspection service. 1.4 Grade Qualifications (Also See Appendix A.) 1.4.1 Two classifications of tests are described in this Standard, Operational and Security. 1.4.2 Manufacturers shall indicate the Grade level of locks meeting both Operational Tests 9 and Security Tests 10 classifications. A Grade 1 lock shall meet Grade 1 criteria, a Grade 2 lock shall meet Grade 2 criteria, and a Grade 3 lock shall meet Grade 3 criteria in each classification.