ANSI/UL1479 (ASTM E814) CAN/ULC S115
F Ratings - 2 Hr F Ratings - 2 Hr
T Rating - 0 Hr FT Rating - 0 Hr
L Rating At Ambient - Less Than 1 CFM/sq ft FH Ratings - 2 Hr
L Rating At 400 F - Less Than 1 CFM/sq ft FTH Rating - 0 Hr
  L Rating At Ambient - Less Than 1 CFM/sq ft
  L Rating At 400 F - Less Than 1 CFM/sq ft
    1. Wall Assembly — Min 6 in. (152 mm) thick reinforced lightweight or normal weight (100-150 pcf or 1600-2400 kg/m3) concrete. Wall may also be constructed of any UL Classified Concrete Blocks*. Max size of opening is 1050 sq in. (6774 cm2) with a max dimension of 35 in. (889 mm).

      See Concrete Blocks (CAZT) category in the Fire Resistance Directory for names of manufacturers.

    2. Steel Duct — Nom 30 by 24 in. (762 by 610 mm) (or smaller) No. 24 gauge (or heavier) steel duct to be installed eccentrically within the opening. Steel duct to be rigidly supported on both sides of wall assembly.
    3. Batts and Blankets* — Max 1-1/2 in. (38 mm) thick glass fiber batt or blanket (min 3/4 pcf or 12 kg/m3) jacketed on the outside with a foil-scrim-kraft facing. Longitudinal and transverse joints sealed with aluminum foil tape. During the installation of the fill material, the batt or blanket shall be compressed 50% such that the annular space within the firestop system shall be min 1 in. (25 mm) to max 2-3/4 in. (70 mm).

      See Batts and Blankets - (BKNV) category in the Building Materials Directory for names of manufacturers. Any batt or blanket meeting the above specifications and bearing the UL Classification Marking with a Flame Spread Index of 25 or less and a Smoke Developed Index 50 or less may be used.

    4. Firestop System — The firestop system shall consist of the following:
      A. Packing Material — Min 4-7/8 in. (124 mm) thickness of min 4 pcf (64 kg/m3) mineral wool batt insulation firmly packed into opening as a permanent form. Packing material to be recessed from both surfaces of wall as required to accommodate the required thickness of fill material.
      B. Fill, Void or Cavity Material* — Sealant — Min 5/8 in. (16 mm) thickness of fill material applied within annulus, flush with both surfaces of wall.

      RECTORSEAL — FS 900+ Sealant, Metacaulk MC 150+, Biostop BF 150+


      C. Steel Retaining Angles — Min No. 22 gauge galv steel angles sized to lap steel duct a min of 2 in. (51 mm) and lap wall surfaces a min 1-1/2 in. (38 mm). Angles attached to steel duct on both sides of wall with min No. 10 steel sheet metal screws spaced a max of 1 in. (25 mm) from each end of steel duct and spaced a max 6 in. (152 mm) OC.
XHEZ.W-J-7046 W-J-7046 XHEZ 613495002 SYSTEM Active 20140716 20140716 613495002