Unifrax’s FyreWrap® Elite®1.5 Duct Insulation

Product Description: 

FyreWrap Elite  1.5 Duct Insulation incorporates Insulfrax® Thermal Insulation as its core material. Insulfrax is a high-temperature insulation made from calcia, magnesia, silica chemistry  designed to enhance biosolubility. It provides excellent insulation in a noncombustible blanket form. Encapsulating Material: The core insulation is completely encapsulated in an aluminum foil, fiberglass-reinforced scrim covering. This scrim provides additional handling strength as well as protection from tearing and moisture absorption.


  • 1- and 2-hour fire-rated enclosure (3 hour available)
  • Alternate to fire-rated shaft
  • Zero clearance to combustibles at all locations on blanket wrap
  • Saves weight, space, labor
  • Thin, lightweight single-layer system
  • High-temperature, biosoluble insulation
  • Durable foil-scrim covering • GREENGUARD listed for Microbial Resistance


Unifrax’s  FyreWrap® Elite®1.5 Duct Insulation is a singlelayer flexible duct wrap enclosure for  1- and 2-hour fire-rated air distribution systems (ADS ducts). Typical duct types include smoke control, hazardous exhaust, laboratory chemical fume, stairwell and vestibule pressurization, ventilation, supply/return ducts,  commercial dryer exhaust, as well as refuse and linen chutes.  This slim, compact design is an alternate to code prescribed fire-rated shafts and results  in significant weight, space and labor savings when compared to traditional shafts.


Code Compliance:

IBC 2006 Sect. 909.10.2; IMC 2006 Sect. 513.10.2, NFPA 92A 2006 Sect. 6.62, NFPA 92B 2005 Sect. 7.5.2, NFPA 101 2006 Sect. 8.6.7, 18.7.7

For more information involving installation techniques and material data sheets, please follow the attached manufacture link