An electrical box penetrates a rated wall assembly per the architectural wall types. Fire and smoke sealant is applied all around the electrical box perimeter to maintain the fire rating. Three and a half inches of zero point five pounds per cubic foot glass fiber insulation is firmly packed into the opening around the box per electrical drawings.
WALL ASSEMBLY; SEE WALL TYPES FIRE AND SMOKE SEALANT ALL AROUND ELECTRICAL BOX. SEE ELECTRICAL DRAWINGS 3 1/2" THICKNESS OF 0.5 PCF GLASS FIBER INSULATION FIRMLY PACKED INTO OPENING.
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