Through Penetrations
System No. C-AJ-3310
This material was extracted and drawn by 3M Fire Protection Products from the 2010 edition of the UL Fire Resistance Directory.
3Fire Protection Products
www.3m.com/firestop
C-AJ-3310 • 1 of 1
Product Support Line
1-800-328-1687
Concrete
CAJ
1. Floor or Wall Assembly – Min 4-1/2 in. (114 mm) thick reinforced lightweight or normal weight (100-150 pcf or 1600-2400 kg/m3)
concrete. Floor assembly may also be constructed of any min 6 in. (152 mm) thick UL Classified hollow-core Precast Concrete Units*.
Wall may also be constructed of any UL Classified Concrete Blocks*. Max diam of opening 6 in. (152 mm).
See Concrete Blocks (CAZT) and Precast Concrete Units (CFTV) categories in Fire Resistance Directory for names of manufacturers.
2. Cables – Aggregate cross-sectional area of cables in opening to be max 48 percent of the cross-sectional area inside the sleeve or opening.
Annular space between cables and periphery of opening or sleeve shall be min of 0 in. (0 mm, point contact) to max 2 in. (51 mm). Cables to
be rigidly supported on both sides of floor or wall assembly. Any combination of the following types and sizes of cable may be used;
A. Max 400 pair No. 24 AWG (or smaller) copper conductor with polyvinyl chloride (PVC) insulation and jacketing material.
B. Max 1/C No. 750 kcmil (or smaller) copper conductor cable with cross-linked polyethylene (XLPE) jacket.
C. Max 7/C No. 12 AWG (or smaller) copper conductor power and control cables with XLPE or PVC insulation with XLPE or PVC jacket.
D. Max 3/C No. 4/0 AWG (or smaller) copper or aluminum conductor SER cables with PVC insulation and jacket.
E. Max 110/125 fiber optic (F.O.) cable with PVC insulation and jacket.
F. Max 3/C with ground No. 8 AWG (or smaller) copper conductor NM cable with PVC insulation and jacket.
G. Max No. 18 AWG RG/U coaxial cable with fluorinated ethylene (FE) or PVC insulation and jacket.
H. Max 4 pair No. 24 AWG (or smaller) copper conductor data cable with Hylar jacket and insulation.
I. Max 4 Pair No 22 AWG (or smaller) Cat 6 copper conductor with PVC insulation and jacket
J. Max 3/C No. 2/0 AWG (or smaller) aluminum or copper conductor cable with XLPE insulation and PVC jacket.
K. Max 3/C No. 2/0 aluminum or copper SE cable with PVC insulation and jacket.
3. Firestop System – The firestop system shall consist of the following:
A. Firestop Device* – One firestop device module centered within the opening. The firestop device module consists of a 12 in. (305 mm)
long galv steel. Firestop device module to be installed in accordance with the accompanying installation instructions. The space between
the firestop device module and the periphery of the opening shall be min 0 in. (0 mm, point contact) to max 1 in. (25 mm). Firestop
device module secured in place by means of steel restraint plates sized to accommodate the firestop device module. Steel restraint plate
installed on top sides of concrete floor or both sides of a wall or hollow core floor and secured around firestop device module with
steel screws. The steel restraining plate is then secured to both sides of the floor or wall assembly with masonry screws. The firestop
device module is to be installed with its ends projecting an equal distance beyond each surface of the floor or wall assembly. After the
installation of the cables (Item 2) and the packing material, if required (Item 3A), the supplied putty material is to be packed into each
end of the firestop device with care taken to fill the interstices between the cables. A minimum depth of 1 in. (25mm) is required for the
putty material at each end of device on the wall assemblies and the top side for floor assemblies.
3M COMPANY
3M FIRE PROTECTION PRODUCTS – 3M Fire Barrier Putty Sleeve Kit DT 100, DT 200 or DT 400
B. Packing Material – (Required for floor installation only on DT 400, optional on wall assemblies) Min 2 in. (51 mm) thickness of min
4.0 pcf (64 kg/m3) mineral wool batt insulation firmly packed into top end of sleeve (Item 3A) as a permanent form. Packing material to
be recessed from top end of sleeve to accommodate the required thickness of fill material.
C. Fill, Void or Cavity Material* – After the installation of the packing material, if required (Item 3B), the supplied putty material is to be
packed into each end of the firestop device. A minimum depth of 1 in. (25mm) is required for the putty material at each end of device on
the wall assemblies and the top side for floor assemblies.
3M COMPANY
3M FIRE PROTECTION PRODUCTS – 3M Fire Barrier MP+ Putty stix
+Bearing the UL Listing Mark
*Bearing the UL Classification Mark
3000 Series
Cables
March 18, 2010
F Rating – 3 Hr
T Rating – 1/2 Hr