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-   -   What is the 2x250 , 2x450 in acoustic duct insulation (https://www.askmehelpdesk.com/showthread.php?t=359399)

  • May 29, 2009, 10:30 PM
    krishnasagar473
    what is the 2x250 , 2x450 in acoustic duct insulation
    Dear sir / mam
    You may know answer this .
  • May 30, 2009, 04:03 AM
    hvac1000
    It is a form of measurement for duct insulation directly related to the insulations resistance to sound and thermal transformation.

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