This Guide Index will allow you to select a list of approved motors by motor class.
The Motor Key List explains the TMT/NAR standard motor code to provide a common reference for all users.
The US manufacturers listed are, at a minimum, NFPA 1125 compliant
The Canadian manufacturers are, at a minimum, CRC 599 (NRCan/ERD) compliant
Motors tested either less than or greater than the advertised class are listed in the advertised class.