The inner duct is draped with thick fiberglass insulation and covered by a flame retardant, scrim foil mylar vapour barrier.
This top-rated ULC-S110 and UL-181 Class 1 product uses a Triple Lock (T/L basic) perforated core with an open area of 20% to 25% to completely cushion sounds such as air movement and duct vibrations.
- 2" w.g. positive thru 16" Dia.
- 1" w.g. positive, 10" Dia.
- 4000 F.P.M.
Vapour Barrier Permeance:
- .05 Perm A.S.T.M. E96, Procedure A
Operating Temperature Range: -20°F to +250°F
Flame/Smoke: 25/50 UL 181 Class 0
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.