Fire safety is a critical requirement in HVAC-R applications. ARPRO 4135 FR is a specially developed flame-retardant grade of expanded polypropylene that self-extinguishes in the event of ignition, without the use of halogenated additives.
Designed to help protect HVAC-R components against fire risks, ARPRO 4135 FR enables safer system designs while supporting compliance with strict fire safety standards. Its performance depends on part thickness and density, and it is suitable for use in enclosures, ducting, and protective housings.
Contractors and OEMs benefit from ARPRO’s lightweight, durable nature and its ability to combine thermal insulation with flame resistance, streamlining installation while enhancing safety.
Full flame test data is available in our Fire Resistance Properties datasheet.
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