The head and jamb conditions of a shaft wall framing assembly integrate with a damper sleeve referenced on the mechanical drawings. A 1 1/2 inch by 1 1/2 inch by 43 mil metal framing angle attaches at the perimeter alongside specified firestopping. The assembly complies with Underwriters Laboratories test requirements for a one-and-one-half-hour fire rating following shaft wall and damper manufacturer instructions based on USG systems.
HEAD JAMB 1 1/2" x 1 1/2" x 43 MIL DAMPER SLEEVE; SEE MECHANICAL DRAWINGS NOTE: 1. UL TEST R13479 FOR 1 1/2 HR SHOWN 2. COMPLY W/ SHAFT WALL MFR AND DAMPER MFR INSTRUCTIOS TO ACHIEVE REQUIRED FIRE RATING 3. BASED ON USG 1 1/2" x 1 1/2" x 43 MIL SEE ASSEMBLIES SEE ASSEMBLIES DAMPER SLEEVE; SEE MECHANICAL DRAWINGS 09 21 16 - METAL FRAMING ANGLE 07 84 00 - FIRESTOPPING 07 84 00 - FIRESTOPPING 09 21 16 - METAL FRAMING ANGLE
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