The two tests are necessary to protect against flammable grease from either catching fire when it passes as a result of an adjacent spot or, When the grease by itself is now alight, resulting in a fire to get started on inside the adjacent spot by radiant heat. Should the https://fireresistingductworkinsu35667.ziblogs.com/37072355/the-single-best-strategy-to-use-for-fire-resisting-ductwork-insulation