The combination of standard external helix as scuff guard and non-glue construction results in the industry standard high-temperature duct.
Unit of Measure

Hose I.D.

N/A 4.00 in

Working Pressure

N/A 3.7 psi

Negative Pressure

N/A 2.1 in/Hg

Weight

N/A 0.4 lbs/ft