Diploma with its fine textured surface offers a wide range of edge details. The 'Acoustic Design of Schools' document (BB93) produced by the DfES gives the appropriate standards and we have designed the 'Diploma' products to meet and exceed these requirements in a wide range of teaching spaces.
* 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 These are valid although Dnfw, which is essentially the same as Dncw, has superseded it.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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