Electrical · E-ZK7JN

Sound Rated Junction Box Detail

Materials

Gypsum / Drywall

Elements

Walls Ceilings Insulation

Connections

Embed Plate

About this detail

An electrical junction box is installed within an insulated gypsum board wall assembly for sound control. The junction box is sealed airtight with sheet caulking or firestop putty pads, and a quarter-inch gap around the perimeter is filled with acoustical sealant. Batt insulation fills the wall cavity, and conduit and conduit fittings are wrapped per the manufacturer's instructions. Boxes on opposite sides of the wall must be separated by sixteen inches minimum, and fire-rated putty pads are provided in lieu of sheet caulking where required to maintain fire-rated separations.

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