Metal pipes, steel conduits, and electrical metallic tubing penetrate a gypsum board wall assembly with a maximum diameter of 2 inches. The annular space around the pipe is sealed using Hilti FS-One Max firestop sealant installed per UL System W-L-1389. The penetrations are applicable for steel pipe schedule 5 or heavier, steel conduit, and EMT.
INSTALL PER UL SYSTEM W-L-1389 USE HILTI FS-ONE MAX FIRESTOP SEALANT METAL PIPE TYPE MAX. DIA. STEEL PIPE (SCH. 5 OR HEAVIER) 2" STEEL CONDUIT 2" EMT 2"
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