Architectural · A-TZA4Y

Airtight Seal and Putty Pack at Recessed Wall Box

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Recessed boxes in gypsum board walls require airtight sealing and putty packs to maintain acoustic separation and fire ratings. Boxes must be sealed tight to the gypsum board on both sides of the partition. Where recessed boxes are spaced closer than twenty-four inches apart, putty packs must be installed around the boxes to prevent sound transmission through the wall assembly. Additional layers of gypsum board are provided where specified by the wall type. This detail applies to recessed boxes used for electrical switches, receptacles, fire alarm devices, communication devices, and security devices.

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