FyreWrap® Elite® 1.5, a long-standing passive fire protection solution for ductwork in the US, is now tested and approved for use in major markets around the world. Unifrax has recently conducted significant testing to the new European Norm Standards, and the Australian Standards as well as securing approval from several countries and emirates throughout the middle east. This testing combined with the previous testing for the I-Codes positions FyreWrap® Elite® 1.5 to meet the needs of the vast majority of construction markets.


FyreWrap® Elite® 1.5 Duct insulation from Unifrax is a flexible insulation wrap designed for creating fire protection enclosures for building ductwork systems.
Thin, lightweight and easy to install, FyreWrap® Elite® 1.5 systems offer significant savings in installation time and overall system weight. The flexible product form facilitates efficient installation where access to the duct is limited or located in close proximity to other building services.
FyreWrap® Elite® 1.5 has been tested and approved for use in a number of different countries and approvals cover a range of duct types including HVAC, pressurization and kitchen extraction systems. Approvals include ASTM, BS, ISO, EN and AS.


Core Material: Low Bio-persistence wool. Totally inorganic and exonerated from classification under Nota Q of EU Directive 97/69/EC.
Encapsulation Scrim: Full encapsulation with an aluminium foil/glass fibre reinforced aluminized polyester scrim. The scrim provides additional handling strength in addition to providing protection against moisture absorption.


Thickness:                         38mm (1.5 inches)

Nominal Density:             96kg/m³ ( 6pcf)

EN13501-1:                       Non-combustibility A1

EN 1608:                            Parallel Tensile Strength 180 kPa

EN 826:                              Compressive Stress (at 10%) 2.4 kPa

EN 12667:                          Thermal Resistance (at 10°C) R-Value 1.14

ASTM D6329-03:              Microbial Resistance Resistant to mould growth

FyreWrap® Elite® 1.5 for Air Distribution System (ADS)
Unifrax’s FyreWrap® Elite® 1.5 Duct Insulation is a single layer 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.
FyreWrap® Elite® 1.5 Duct Insulation offers the following features:
  • 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
FyreWrap® Elite® 1.5 for Commercial Kitchen Grease Duct System
Unifrax’s FyreWrap® Elite® 1.5 Duct Insulation is a two-layer flexible enclosure for two-hour rated commercial kitchen grease ducts. FyreWrap® Elite® 1.5 Duct Insulation is tested per ASTM E2336 and is acceptable as an alternate to a traditional fire-rated shaft. Installed as a two-layer system, FyreWrap® Elite® 1.5 complies with the International Mechanical Code (IMC) and Uniform Mechanical Code (UMC).
FyreWrap® Elite® 1.5 Duct Insulation offers the following product features:
  • 2-hour fire-resistance rating
  • Alternate to shaft enclosure
  • Complies with IMC and UMC
  • Tested per ASTM E2336
  • Two-layer system
  • High-temperature, biosoluble insulation
  • Zero clearance to combustibles, at any location
  • GREENGUARD listed for Microbial Resistance
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