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Hilti Firestop Systems Page: 2 of 7 Wall Opening Protective Materials (CLIV, CLIV7) 1 or 2-Hr. Gypsum Wall Assembly (2-Hr. Shown) Power Cable Steel Stud or Wood Stud (Not Shown) UL Listed Non-Metallic Outlet Box (Refer to UL Listing) or UL Listed Metallic Outlet Box (Refer to UL Listing) Firestop Box Insert CP617 / CFS-P PA / FIRESTOP BOX INSERT Reproduced by HILTI, Inc. Courtesy of Underwriters Laboratories, Inc. January 30, 2019