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Question:

What is a temperature rise door?

 

Answer:

A temperature rise door is used when it is required to retard the transmission of heat from one area to another. It is a measurement of the rise in temperature above ambient temperature of the non-exposed side of the door during the first 30 minutes of a standard fire test. The lower the degrees, the better the rating. The currently accepted norm is 250 degree rise over 30 minutes. However, 450 and 650 degree is also available.

 

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