Symphony - Powershield Acoustic


Powershield Symphony is an extreme performance 45dB acoustic personnel door, and is suitable for use where high levels of sound insulation is required.
With exceptional aesthetic and long-lasting appeal, the Powershield Symphony steel doorsets provide architectural acoustic enhancements to deal with sound in and around buildings of all kinds and ensure the efficient distribution of desirable sounds as well as the exclusion of unwanted sound.

Typical applications for this type of door include:

  • Concert halls
  • Recording studios
  • Auditoriums
  • Retail & commercial buildings
  • Industrial buildings
  • Public buildings
  • Custodial & government buildings


  • Acoustic performance rated up to 45dB to EN ISO 140-3
  • Single configuration only
  • Inward and outward opening
  • Full range of ASSA ABLOY hardware options
  • Minimum backset lock of 65mm required
  • Triple locking required for fire rating
  • Available with a range of Vision Panels
  • Upgradable for fire rating up to 240 minutes
  • Galvanised steel construction with an optional upgrade to stainless steel
  • A quality aluminium DDA compliant threshold is included and required to give acoustic performance
  • A surface mounted frame seal is included and required to give acoustic performance

Powershield Symphony doorsets are available in a wide range of customisable options. Please refer to the Technical Brochure for more information, or contact us on 0044 28 9266 2200.


 Powershield Security Doors are available in a wide range of finishes including primed, powder coated and stainless steel. For our standard colour range please refer to the Standard Colour Palette in the downloads section, or contact us on 0044 28 9266 2200 for further options.


  • EN-ISO 140-3
  • BS EN 14351-1:2006 +A1 2010
  • Upgradable to FD30(S) - FD240(S) in accordance with BS476 Part 22: 1987