Certification listing

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A certification listing is a document used to guide installations of certified products against which a field installation is compared (see Listing and approval use and compliance) to make sure that it complies with a regulation, such as a building code. Products or items that are subject to product certification and must be used in a specific manner in order to be safe for use, are typically required to be installed or used in accordance with a subject-related certification listing. Certification listings are issued by organisations that are usually nationally accredited for doing both testing and product certification work, in accordance with nationally accredited standards.

Example of fire door test[edit]

The following pictures illustrate an example of a successful fire test that led to a UL listing or a three-hour fire protection rating. The entire assembly is exposed to a fire for the specified amount of time per the objective of the test. Following this heat exposure, a hose stream is applied to the door. Fire doors and fire dampers are derated from the fire barriers they are in. In this case, a 3-hour rated door is acceptable for use in up to a 4-hour wall. Because it goes into a 4-hour wall, it received a 45PSI (31N/cm²) hose stream test.

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