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�55 l,cr <br />c us <br />Classified by <br />Underwriters Laboratories, Inc. <br />to UL 1479 and CAN/ULC-5115 <br />System No. W-L-7156 <br />ANSI/UL1479 (ASTM E814) <br />F Ratings —1 and 2 Hr (See Item 1) <br />T Rating — 0, 1 and 2 Hr (See Item 4C) <br />CAN/ULC S115 <br />F Ratings —1 and 2 Hr (See Item 1) <br />FT Rating — 0,1, and 2 Hr (See Item 4C) <br />FH Ratings —1 and 2 Hr (See Item 1) <br />FTH Rating — 0,1, and 2 Hr (See Item 4C) <br />Wall Assembly — The 1 or 2 hr fire -rated gypsum board/stud wall assembly shall be constructed of the materials and in the manner specified in <br />the individual U300, U400, V400 or W400 Series Wall and Partition Designs in the UL Fire Resistance Directory and shall include the following <br />construction features: <br />A. Studs — Wall framing shall consist of either wood studs or steel channel studs. Wood studs to consist of nom 2 by 4 in. (51 by 102 mm) <br />lumber spaced max 16 in. (406 mm) OC. Steel studs to be min 3-1/2 in. (89 mm) wide and spaced max 24 in. (610 mm) OC. Additional <br />framing members shall be used to completely frame around opening. <br />B. Gypsum Board* — Min 5/8 in. (16 mm) thick, 4 ft (1.2 m) wide with square or tapered edges. The gypsum board type, thickness, number of <br />layers and orientation shall be as specified in the individual Wall and Partition Design. Max size of opening is 210 sq in. (1355 cm2) with a <br />max width of 14-1/2 in. (368 mm) for wood studs. Max size of opening is 76.2 sq ft. (7 m2) with a max width of 105-1/2 in. (2.7 m) for steel <br />studs. <br />The hourly F and FH Ratings of the firestop system are equal to the hourly fire rating of the wall in which it is installed. <br />Steel Duct — Max 100 by 100 in. (2.5 by 2.5 m) steel duct to be installed within the framed opening. The duct shall be constructed and reinforced <br />in accordance with SMACNA construction standards. Steel duct to be rigidly supported on both sides of wall assembly. <br />Reproduced by HILTI, Inc. Courtesy of <br />C2= Underwriters Laboratories, Inc. <br />Hilt! Firestop Systems August 22, 2018 <br />Page: 1 of 2 <br />to <br />Uj <br />