Heater. Any device or assembly of devices or appliances used to heat the interior of any motor vehicle. This includes a catalytic heater which must meet the requirements of 177.834(2) of this title when Class 3 (flammable liquid) or Division 2.1 (flammable gas) is transported.


49 CFR § 393.5

Scoping language

As used in this part, the following words and terms are construed to mean:

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