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Additional Tips / Considerations
•
If possible, run speaker wires after AC wiring is in place to avoid
induced hum caused by close parallel proximity of the two types of
wire.
•
Avoid running speaker wires close to house electrical wiring for any
distance. If you have to run them parallel, leave two feet between the
wiring. Speaker wires should cross AC lines at a 90° angle.
Technical Specifications
FBC1-FR Flexbox Fire Rated In-ceiling Back Box
Dimensions: 14"W x 6"D x 17.5"H ( 355 x 152 x 445 mm)
Material Thickness: 1" (25 mm) nominal thickness
Weight: 6.7 lbs (3 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
©2009 Russound. All rights reserved.
All trademarks are the property of their respective owners.
Specifications are subject to change without notice.
Russound is not responsible for typographical errors or omissions.
Flexbox Back Box Information
•
Route horizontal wire runs through holes drilled in studs at roughly
equal heights.
•
Secure speaker wires in place against a stud along vertical runs with
insulated staples only. Do not pierce the wire insulation. Allow a bit of
slack for expansion of building materials.
FBW1-FR Flexbox Fire Rated In-wall Back Box
Dimensions: 14.5"W x 3.5"D x 16"H ( 368 x 89 x 406 mm)
Material Thickness: 1" (25 mm) nominal thickness
Weight: 5.4 lb (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
Russound, Inc.
5 Forbes Road, Newmarket, NH 03857
tel 603.659.5170 • fax 603.659.5388
email: tech@russound.com www.russound.com
28-1337 1/08/09
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