Ductwork runs through many big buildings, providing and eradicating each cold and warm air to maintain a cushty weather for occupants. Regretably, these very important networks also supply the proper pathway for just a fire. Fire rated ductwork improves the safe operation of heating, air flow and air con (HVAC) https://cibsecpd24556.blogzet.com/fire-resisting-ductwork-things-to-know-before-you-buy-42130352