What does 49 CFR 172.528 (NON-FLAMMABLE GAS placard) require?
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Based on 49 CFR 172.528, the requirements for the NON-FLAMMABLE GAS placard are as follows:
* Background Color: The background must be green (in addition to complying with § 172.519).
* Lettering: The letters in both words ("NON-FLAMMABLE" and "GAS") must be at least 38 mm (1.5 inches) high.
* Colors for Symbol, Text, and Borders: The symbol, text, class number, and inner border must all be white.
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