With its fine texture and white appearance Sierra OP meets todays requirements for a modern visual along with a good balance of sound absorption and sound attenuation.
Installation and Maintenance
Declaration of Performance
* Some products may have Dncw values published. These are valid although Dnfw, which is essentially the same as Dncw, has superseded it. For further information on the acoustic performance of Armstrong products please contact our Armstrong Technical Sales.
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38 Market Square, Uxbridge, UB8 1NG, United Kingdom
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