Flexable Duct

Discussion in 'HVAC Heating & Cooling' started by jetlag, Nov 29, 2010.

  1. jetlag

    jetlag New Member

    Dec 12, 2009
    Is it ok to use the silver flexible insulated duct between two foor levels where it will be concealed and unable to access . I plane to run two 10" metal ducts and come off of those with the flex for the floor registers . Does the 2 - 10 " main ducts sound about right for 600 sq ft and reduce down to 8" about half way . The two 10" with one down each side will work better than a large one down the center because I cant get much larger between the floor trusses.
    Last edited: Nov 29, 2010
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