Central for the fire take a look at procedure would be the publicity of duct samples to varying fire situations. A kind A duct sample is subjected to an exterior flame, whilst a kind B duct sample faces both equally exterior and interior fires. Partnered with premier HVAC insulation manufacturers, https://fire-resisting-ductwork34455.ttblogs.com/19412331/the-smart-trick-of-firesafe-fire-rated-ductwork-that-nobody-is-discussing