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Is there a wall box that is acoustically rated?

Yes the part number for a wall box to suit 84 mm centres (standard series, 2000 series etc.) is 157/1F.
Some of its key features are:
  • 1 gang
  • Sliding nut
  • Adjustable 84 mm centres. Robust construction
  • High quality corrosion resistant finish
  • Ample knockouts
  • 1 and 2 hour fire rating - back to back
  • Acoustic rated up to STC50
  • Accessories easy to align. No distortion, even in the toughest conditions
  • Easy access for cables and conduits
  • Suitable for virtually any fire rated application
  • Sound transmission rating for virtually any application
  • For masonry walls
  • Horizontal and vertical mounting
  • Knockouts: 2 x 20, 1 x Type 4 Back, 1 x Type 3 Top, 1 x Type 3 Bottom, 2 x 20 1 x Type 2 LH Side, 2 x 20 1 x Type 2 RH Side
For further information please visit http://www.clipsal.com/Trade/Products/ProductDetail?catno=157/1F
 
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