Pros, Join Our TradeMaster Program!
This high pressure insulated flexible duct, consists of a core made from vinyl coated fiberglass cloth which is mechanically locked together by a corrosive resistant galvanized steel helix. The liner is draped with thick fiberglass insulation and covered by a flame retardant, non toxic polyethylene vapor barrier. The properties of this ULC-S110 and UL-181 Class 1 product combines the rugged puncture resistant fabric with a highly dependable insulated vapor barrier to create a superior high pressure thermal duct ideal for commercial or institutional HVAC use.

Pressure Rated:
  • 25" w.g. positive
  • 10" w.g. neg thru 12" dia.
  • 5" w.g. neg 14" & 16" dia.
  • 1" w.g. neg. 18" & 20" dia

Rated Velocity:
  • 5500 F.P.M.

  • PVC Coated Fiberglass Cloth

Vapour Barrier Permeance:
  • .10 Perm A.S.T.M. Procedure A
  • Connector Rated

Note: This product is compressed by the manufacturer and then packaged for shipping purposes. To reach the specified length, the product needs to be unpackaged and stretched.
Hide Description
Manuals (1)
Diameter (Inches):




Length (Feet):




Core Type:

PVC Coated Fiberglass Cloth


Product Review

Product Q&A

Add-on Item

This item is cost-prohibitive to ship on its own but is available to ship with orders over $200.

Why don't we show the price of this item?

We try to always offer you the lowest prices possible, but some manufacturers require that we only show these low prices once you take further action.

To see the price, simply add the item to your cart or sign in.