F Rating — 2 Hr

T Rating — 1-1/2 Hr

    1. Wall Assembly — Min 5 in. thick reinforced lightweight or normal weight (100-150 pcf) concrete. Wall may also be constructed of any UL Classified Concrete Blocks*. Max area of opening is 128 sq in. with max dimension of 16 in.

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

    2. Metallic Pipe — Nom 1 in. diam (or smaller) steel electrical metallic tubing or steel conduit. One conduit to be centered within the firestop system. Min spacing between conduit and outside perimeter of opening to be 3-1/2 in. Conduit to be rigidly supported on both sides of wall assembly.
    3. Firestop System — The firestop system shall consist of the following:
      A. Steel Wire Mesh — Rectangular sleeve fabricated from No. 8 steel wire mesh having a min 1 in. lap along the longitudinal seam. Length of steel wire mesh to be 4-3/4 in., centered and formed to fit periphery of through opening.
      B. Packing Material — Min 4.0 in. thickness of min 3.5 pcf 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.
      C. Fill, Void or Cavity Material* — Caulk — Min 1/2 in. thickness of fill material applied within the annulus, flush with both surfaces of wall.

      RECTORSEAL — Metacaulk 950


XHEZ.W-J-1019 W-J-1019 XHEZ 613495002 System ACTIVE 19951129 19951129 613495002