Fire-Rated Doors that are fire rated play a key role in helping to save lives as well as minimize property damage. They do this by compartmentalizing radiant heat, flames, and smoke. In addition they provide safe egress.
In a fire-rated door, multiple components work together as part of a single assembly. These components include the glazing, the hardware, the frame, and the door itself.
A testing agency that is nationally recognized typically tests these components as individual products, then classify them for fire door assembly use.
However, in other cases, an agency tests specific components together. In this situation, the components have to be utilized together to maintain their fire rating.