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Russound FBW1-FR Fire Rated In-Wall Back Box

Russound FBW1-FR Fire Rated In-Wall Back Box

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The Flexbox loudspeaker back boxes improve the multiroom audio experience by reducing background noise, diffusing distortion, and providing a vapor barrier. Flexible construction provides easy installation in both new construction as well as retrofit installations.

Flexbox back boxes are flame retardant and meet ASTM E119 and UL 263/NFPA 251 (1 hour) and ASTM E84/NFPA 70 standards. In-wall enclosures fit within 3.5” deep stud bays, while in-ceiling enclosures are sized for 6” bays, and can be rolled up and inserted through a hole for retrofit installations.

Russound Flexbox back boxes work with both Acclaim 5 and 7 Series architectural loudspeakers.

Dimensions: 14.5"W x 3.5"D x 16"H (368 x 89 x 406 mm)

Material Thickness: 1" (25mm) nominal thickness

Weight: 5.4 Ib (2.4 kg)

Material: Proprietary Composite Material

STC Rating: 32

Flame Spread: 23

Smoke Density: 30 (ASTM E84/ NFPA 70)

Thermal Value: R 4.2

Temperature Range: -40° F to 350° F (-40° C to 177° C)

Fire Rating: CLASS 1 Fire Rated ASTM E119 /NFPA 251 and UL 263 for 1 Hour Fire Rating.

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