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Smooth Penetrator: Drawings & Specs

Architects, Engineers, and Certified Installers can download and use these drawings to specify our systems in their construction projects.


Drawings in Adobe Acrobat (PDF) format:

SP-1 Smooth Penetrator drawing (pdf)

SP-2 Smooth Penetrator drawing (pdf)

SP-4 Smooth Penetrator drawing (pdf)


AutoCAD drawings (DWG), compressed (ZIP) for download:

If you do not have AutoCAD, you can download Autodesk DWG TrueView (free DWG Viewer) to view the drawings.

UL W-J-3109 Smooth Penetrator-Concrete 2 Hr System

UL W-L-3231 Smooth Penetrator-Drywall 1 & 2 Hr System

All Unique Fire Stop Products UL AutoCAD drawings



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Septermber 16, 1926

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