Ductboard Collar with Damper

Ductboard Collar with Damper

  • 405D
  • Equivalent Length 35' and add 0.03 pressure loss device.
  • Sizes 5" - 7", 9"; available 24 per box.
  • Sizes 8", 10", 12"; available 12 per box.
  • Size 14" available 10 per box.
  • Size 16" available 8 per box.
  • Size 18" available 6 per box.
  • Size 20" available 4 per box.