Free Firestop Clash Management (FCM) Plugin

From the STI Firestop website:

Introducing a powerful new plugin for AutoDesk Revit®. The FCM (Firestop Clash Management) plugin uses clash detection to find locations where penetrants meet fire-rated barriers and automatically selects the appropriate firestop systems.  It removes the complexity of designing firestop systems and ensures that when it comes time for construction, the systems selected provide the fastest installation and best installed cost.  It is as easy as 1, 2, 3!

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