California State Fire Marsha|Cities of Chicago|County of Dade (Florida)|GreenGuard Indoor Air Quality Certified|HUD|IMC|IRC|New York|NFPA 90A and 90B|San Francisco|UL 181|UMC 10-1 (ICC ES Report no. ESR-1268)

• Thermal performance (R-value) are classified by underwriters laboratories in accordance with ADC flexible duct performance and installation standard using ASTM C-518, at installed wall thickness, on flat insulation only The inner core of all three products is airtight and designed for low to medium operating pressures in HVAC systems Atco 031 have increased insulation for superior thermal performance A double lamination of tough polyester which encapsulates a steel wire helix forms the airtight inner core The double layer core of each product is wrapped in multiple thicknesses of fiberglass insulation Airtight inner core energy efficient/no fiberglass erosion into air stream Encapsulated wire helix no unraveling when cut to length/quick installation Smooth inner core low friction loss/low operating cost Thick blanket of fiberglass insulation energy efficient/excellent thermal characteristics Tough® reinforced metallized polyester jacket tear and puncture-resistant/low maintenance Lightweight compact carton reduces warehouse and job site handling costs 0.05 perm vapor transmission Surface burning characteristics 25 maximum flame spread, 50 maximum smoke developed