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    krishnasagar473's Avatar
    krishnasagar473 Posts: 3, Reputation: 1
    New Member
     
    #1

    May 29, 2009, 10:30 PM
    what is the 2x250 , 2x450 in acoustic duct insulation
    Dear sir / mam
    You may know answer this .
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #2

    May 30, 2009, 04:03 AM
    It is a form of measurement for duct insulation directly related to the insulations resistance to sound and thermal transformation.

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