Page text

Sheet
Drawing No.
HILTI, Inc.
Tulsa, Oklahoma USA (800) 879-8000
Date
Scale
A
A
NOTES : 1. MAXIMUM AREA OF OPENING = 1300 SQ. IN. WITH A MAXIMUM DIMENSION OF 50 IN.
2. ANNULAR SPACE = MINIMUM 0", MAXIMUM 2".
3. AFTER SEALING SPACE BETWEEN DUCT AND CONCRETE WALL ASSEMBLY WITH HILTI
FIRESTOP SEALANT, FASTEN STEEL ANGLE (MIN. 18 GA.) TO DUCT WITH MINIMUM NO.
8 x 3/4" LONG SHEET METAL SCREWS. STEEL ANGLE TO OVERLAP DUCT BY  MINIMUM
2" AND CONCRETE WALL ASSEMBLY BY MINIMUM 1". ANGLE DOES NOT HAVE TO BE
FASTENED TO CONCRETE WALL ASSEMBLY.
1. CONCRETE WALL ASSEMBLY (1-HR. OR 2-HR. FIRE-RATING) :
A. LIGHTWEIGHT OR NORMAL WEIGHT CONCRETE WALL (MINIMUM 5" THICK).
B. ANY UL/cUL CLASSIFIED CONCRETE BLOCK WALL.
2. RECTANGULAR SHEET METAL DUCT (MAXIMUM SIZE : 24" x 48", MIN. 24 GA. THICKNESS).
(NOTE : NOT FOR USE IN DUCT SYSTEMS CONTAINING A FIRE DAMPER.)
3. MINIMUM 5/8" DEPTH HILTI FS-ONE INTUMESCENT FIRESTOP SEALANT, HILTI CP 601S
ELASTOMERIC FIRESTOP SEALANT, OR HILTI CP 606 FLEXIBLE FIRESTOP SEALANT.
4. [NOT SHOWN] APPLY MINIMUM 1/2" BEAD HILTI FS-ONE INTUMESCENT FIRESTOP SEALANT,
HILTI CP 601S ELASTOMERIC FIRESTOP SEALANT, OR HILTI CP 606 FLEXIBLE FIRESTOP
SEALANT AT POINT OF CONTACT PRIOR TO ATTACHING STEEL ANGLE.
WJ
7021h
1 of 1
5/64" = 1"
Sep. 27, 2010
UL/cUL SYSTEM NO. W-J-7021
F-RATING = 1-HR. OR 2-HR.
T-RATING = 0-HR.
L-RATING AT AMBIENT = LESS THAN 1 CFM/SQ. FT.
L-RATING AT 400°F = LESS THAN 1 CFM/SQ. FT.
WJ7021h.092710
METAL DUCT THROUGH CONCRETE WALL OR CONCRETE BLOCK WALL ASSEMBLY
MAXIMUM 6" C/C SPACING
(SEE NOTE NO. 3 BELOW)
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SECTION A-A
FRONT VIEW