Insulated Flex Duct 6" x 25'
 
Outer Jacket: Reinforced VMPET
Fiberglass: UL 2818 Owens Corning Pink Fiberglass for R8 reference
Inner Duct: Black PET Duct
Compress Ratio: 1:10
Fire Resistance: B1
Temperature Range: -10F /+180F continuous, 200F intermittent
Maximum Positive: 4' - 6" W.C
Maximum Air Velocity: 5000FPM