Central into the fire test course of action will be the publicity of duct samples to different fire problems. A sort A duct sample is exposed to an exterior flame, even though a Type B duct sample faces both of those exterior and inside fires. Smoke extraction ducts Principally developed https://firesafefireratedductwork45567.blogpixi.com/39717127/getting-my-fire-rated-insulation-for-ductwork-to-work