Flame and Smoke RatingsUnlike many other plastic materials, polypropylene is completely non-toxic, even under full combustion, eliminating the threat of dangers smoke and fumes. And to accommodate local building and fire codes, Aquatherm has developed a number of options that allow the installed systems to meet a Flame Spread Rating of 25 or less and a Smoke Index Rating of 50 or less.Both the Aquatherm FS and the Aquatherm Advanced systems have been tested and listed to meet flame spread and smoke development requirements and are safe to install in return-air plenums and exposed in high-rise construction. Meets:
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