Oct 24, 2021 #1 engggu Mechanical Apr 4, 2021 39 0 0 PH Hello, do we have specific code on NFPA that requires 2hr fire rating insulation for duct used as smoke exhaust duct? Local codes were not clear on this. Thank you
Hello, do we have specific code on NFPA that requires 2hr fire rating insulation for duct used as smoke exhaust duct? Local codes were not clear on this. Thank you
