This elevation shows a pipe penetration firestop assembly maintaining an annular space between one-quarter inch minimum and one and one-quarter maximum around the pipe. The firestopping system conforms to UL listing W-L-1064 for fire-rated wall penetrations.
A ELEVATION B B ANNULAR SPACE SHALL BE 1/4" MIN. TO 1 1/4" MAX. UL LISTING: W-L-1064
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