640C 40 Series Rip Stop Flex Duct With R 4.2 Insulation, 6 in Dia, 25 ft L, 6000 fpm, Fiberglass

QFX640C MFG #: 640C
  • Diameter: 6 in
  • Flow Rate: 6000 fpm
  • Material: Fiberglass
  • Finish: Silver
  • Length: 25 ft
  • Manufacturer: Quietflex Manufacturing
  • Manufacturer #: 640C
  • Series: 40 Series
  • Type: Rip Stop
  • Vapor Transmission: At or Below 0.05 perms
  • Features
  • Johns Manville Formaldehyde-free™ fiber glass insulation
  • GREENGUARD® certified insulated products
  • Galvanized or bronze metal core reinforcing
  • Oversized core to fit on collars and register boxes
  • Weather-resistant packaging