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Fortified Exit Rim Device (FER)

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The Von Duprin® 33A/35A and 98/99 series offers Fortified exit rim (FER) devices for use in applications desiring a fortified device and in systems undergoing ASTM F3561-22 testing.

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Overview

The Von Duprin® 33A/35A and 98/99 series offers Fortified exit rim (FER) devices for use in applications desiring a fortified device and in systems undergoing ASTM F3561-22 testing. The FER device has design enhancements to add extra reinforcement, including a cast steel center case (33A/35A) and formed steel (98/99) chassis. ASTM F3561-22 is a standard test method designed to evaluate the forced-entry resistance of building components like windows, doors, and modular panels after a simulated active shooter attack. Intended for use in commercial, residential, educational, governmental, and other institutional settings, this test assesses the ability of these assemblies to resist creating an opening large enough for passage. The method involves simulating an active shooter weakening the system with repetitive shots followed by mechanical impacts. It is a laboratory test that does not rate ballistic resistance. Systems are tested as complete units. To review an up-to-date list of assemblies that have undergone ASTM F3561-22 testing with the 33A/35A and 98/99 FER device and the system level test results, please ask your entrance system manufacturer for an Intertek or UL listing or test report.

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The FER option was designed to be used as a part of systems being tested to the ASTM F3561-22 standard.  The Von Duprin 33A/35A and 98/99 devices with the FER option are designed to withstand forced-entry attempts, providing robust protection for commercial, residential, educational, and insititutional settings.   Featuring center cases with cast/formed steel chassis, the FER option offers superior strength and durability, enhancing the overall security of your building components.   Trims with armor plates used with exit only (EO) devices providing center case protection.  The FER option is ideal for double doors with mullion, providing a tested and reliable solution.   The larger main link and internal latch return spring located inside the center case add extra reinforcement, ensuring that the latch remains engaged during an attempted forced entry.   

The FER option was designed to be used as a part of systems being tested to the ASTM F3561-22 standard or for applications desiring a fortified device.

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