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Sheet
Drawing No.
HILTI, Inc.
Tulsa, Oklahoma USA (800) 879-8000
Date
Scale
FRONT VIEW
A
A
SECTION A-A
NOTES : 1. MAXIMUM DIAMETER OF OPENING = 8".
2. ANNULAR SPACE = MINIMUM 0", MAXIMUM 7/8".
3. L-RATINGS APPLY ONLY WHEN HILTI FS-ONE INTUMESCENT FIRESTOP SEALANT IS USED.
1. GYPSUM WALL ASSEMBLY (UL/cUL CLASSIFIED U300, U400, V400, OR W400 SERIES) (1-HR. OR 2-HR.
FIRE-RATING) (2-HR. SHOWN).
2. [NOT SHOWN] WOOD STUDS TO CONSIST OF NOMINAL 2" x 4" LUMBER. STEEL STUDS TO BE
MINIMUM 3-1/2" WIDE.
3. PENETRATING ITEM TO BE ONE OF THE FOLLOWING :
A. MAXIMUM 4" NOMINAL DIAMETER STEEL PIPE (SCHEDULE 5 OR HEAVIER).
B. MAXIMUM 4" NOMINAL DIAMETER CAST OR DUCTILE IRON PIPE.
C. MAXIMUM 4" NOMINAL DIAMETER COPPER PIPE OR TUBING.
4. MINIMUM 1" TO MAXIMUM 1-1/2" THICK GLASS-FIBER PIPE INSULATION (3.5 PCF DENSITY).
5. MINIMUM 5/8" DEPTH HILTI FS-ONE INTUMESCENT FIRESTOP SEALANT, HILTI CP 606 FLEXIBLE
FIRESTOP SEALANT OR HILTI CP 601S ELASTOMERIC FIRESTOP SEALANT.
6. MINIMUM 1/2" BEAD HILTI FS-ONE INTUMESCENT FIRESTOP SEALANT, HILTI CP 606 FLEXIBLE
FIRESTOP SEALANT OR HILTI CP 601S ELASTOMERIC FIRESTOP SEALANT APPLIED AT POINT OF
CONTACT.
WL
5257b
1 of 1
11/64" = 1"
Mar. 21, 2012
UL/cUL SYSTEM NO. W-L-5257
F-RATING = 1-HR. OR 2-HR.
T-RATING = 0-HR. OR 1-HR.
L-RATING AT AMBIENT = 4 CFM/SQ FT
L-RATING AT 400°F = LESS THAN 1 CFM/SQ FT
WL5257b.0232112
INSULATED METAL PIPE THROUGH GYPSUM WALL ASSEMBLY
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