What are fire rated doors? Fire rated doors are specialized doors that are designed and tested to provide protection against the spread of fire, smoke, and heat. They are an important element in passive fire protection systems and are used in buildings to...
Are hollow metal doors hollow inside? As the name suggests, hollow metal doors have a cavity inside. The interior cavity of a hollow metal door is typically filled with a honeycomb core made from cardboard or foam to provide strength insulation and sound resistance....
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