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.
TMT Certified Manufacturer & Motor Key List
E/F/G Motors, 20.01N - 160N (4.41lbs. - 35.24lbs.)
H Motors, 160.01N - 320N (35.24lbs. - 70.48lbs.)
I Motors, 320.01N - 640N (70.48lbs. - 140.97lbs.)
J Motors, 640.01N - 1280N (140.97lbs. - 281.94lbs.)
K Motors, 1280.01N - 2560N (281.94lbs. - 563.88lbs.)
L Motors, 2560.01N - 5120N (563.88lbs. - 1127.75lbs.)
M Motors, 5120.01N - 10240N (1127.75lbs. - 2255.51lbs.)
N/O Motors, 10240.01N - 40960N (2255.51lbs. - 9022.03lbs.)
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