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FM Approvals 4121:2022

Fire and Smoke Door Holder and/or Release Devices

standard by FM Approvals , 01/01/2022

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Full Description

This standard sets the performance requirements for fire and smoke door holder and/or release devices. They shall be examined for their ability to keep a fire or smoke door in the open position by either electromechanical or electromagnetic means until such time that the unit(s) receive a signal from an external source such as a product of combustion device or a simulated alarm signal meant to test the system.

 

Product Details

Published:
01/01/2022
Number of Pages:
18
File Size:
1 file , 250 KB
Note:
This product is unavailable in Russia, Ukraine, Belarus
 

Document History

  1. FM Approvals 4121:2022

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    Fire and Smoke Door Holder and/or Release Devices

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  2. FM Approvals 4121


    Fire and Smoke Door Holder and/or Release Devices

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