UL181, NFPA 90A and 90B, IMC, IRC, UMC 10-1 (ICC ES Report No. ESR-1268), HUD, Cities of Chicago, New York, San Francisco, County of Dade (Florida), California State Fire Marshall
Flexible Duct For Nominal Duct Diameter 12 in Wall Thickness 2 in Maximum Temperature Rating 180 Degrees F Minimum Temperature Rating -20 Degrees F Insulation Value R 6.0 Color Gray Overall Length 25 ft Duct Material Fiberglass Jacket Material Polyester Fire Rating Flame Spread 25 Max Smoke Developed 50 Max Maximum Pressure Rating 6 in wc Maximum Air Speed 5 000 fpm Vapor Transmission 0.6 Percent