|Finish||Powder Coating, Liquid Spray Paint|
|Usage||Interior and Exterior|
|Core Infill||Special Heat Resistant Material|
|Std Door Thickness||45 - 63 mm|
|Construction||Seam, Seamless, Mechanical engagement|
|Heat Resistance Rating||Available up to 650 Deg F|
In the event of a fire, temperature rise doors minimize the heat transfer to the non-fire side of the door. This allows people to safely pass below the floor of fire origin in a burning building. Temperature rise ratings are 250°F, 450°F, and 650°F, indicating that the non-fire side of the door will not exceed that temperature for 30 minutes. The 250°F temperature rise designation is the most stringent rating of the three because it allows for the least transfer of heat. Temperature rise doors are generally used in stairwells of high-rise buildings. The doors are used to limit the temperature rise through the door into the stairwell for a period of time, thus making it possible for people to exit the burning building by safely passing by the floor of the origin of the fire.