Many steel doors are fire resistant. But, that does not mean that they are fire rated.
A fire resistant door is a door that has been made from fire resistant materials, such as steel. This means that a very high temperature is required to melt the door. So, on a visual level, it will take a considerable amount of time before a steel door is affected by fire.
However, fire rated doors differ in that they are certified to withstand fire, for a given time period. Not only does this mean that they will not catch fire in that time, but they will also prevent fire or smoke from passing through it, within that time frame. As such, they are critical to ensuring fire safety within a building.
Fire rated doors come with that specific degree of fire safety guarantee, which can be illustrated on the doors themselves, to support your risk assessment and give people on the premises peace of mind.
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