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Description & Uses

Owens Corning EnDuraGold™ fiber glass duct board is a rigid, resin-bonded fibrous glass boards with a tough, damage-resistant, flame-retardant, reinforced aluminum foil (FRK) facing. When fabricated into duct systems, it combines excellent thermal and acoustical insulating properties with substantially airtight transmission of air when all joints are sealed with UL 181A listed closures.
EnDuraGold™ fiber glass duct board features a durable airstream surface that isolates the glass fiber substrate from the airstream and inhibits penetration of the insulation by dirt, dust and other pollutants. This durable airstream surface makes it easier to clean the duct system using methods and equipment described in North American Insulation Manufacturers Association (NAIMA) Publication AH122, Cleaning Fibrous Glass Insulated Duct Systems, Recommended Practice.
EnDuraGold™ fiber glass duct board may be used to fabricate components for indoor commercial and residential heating, ventilating and air conditioning duct systems operating at static pressures to ±2 in. w.g. (500 Pa), internal air temperatures 40°F (4°C) to 250°F (121°C) and air velocities to 6,000 fpm (30.5 m/s).
Straight duct sections, elbows, tees, offsets and other system elements can be quickly and easily fabricated and assembled into a complete air transmission system using these lightweight, thermally efficient boards.

Features & Benefits

An EPA registered biocide in the fiberglass mat protects the air stream surface from microbial growth and meets requirements of ASTM C 1338, ASTM G 21 (fungi test) and ASTM G 22 (bacteria test).
Thermal/acoustical insulation board plus jacket forms a single component duct system. This reduces inspection time and the chance of uninsulated duct system components.
R-values as published for EnDuraGold™ fiberglass duct board are superior to those of compressible insulation of equal thickness. Factory control of thickness assures that installed R-values will be as published for the product.
Duct systems built with these boards absorb fan and air turbulence noise; reduce popping noises caused by expansion, contraction and vibration. Fabrication and installation are quieter.
These lightweight boards are easier to transport and handle than insulated sheet metal ducts. They reduce the load imposed on the structure by the duct systems.
Closures with UL 181A listed pressure-sensitive tape, heat-activated tape, or glass fabric and mastic virtually eliminate air leakage. This saves energy and eliminates the need for system over design.
Meets the following model codes and most other applicable codes: NFPA 90A/90B, ICC International Mechanical Code, SBCCI, ICBO, BOCA, CABO, Corps of Engineers Guide Spec., NYC MEA #186-69.
Proper fabrication and installation guidelines help ensure long-term performance of the system. These standards, developed by NAIMA and SMACNA, lead to clearer understanding between specifier and contractor.

Availability

EnDuraGold™ fiberglass duct board is available in the following forms::

TYPE 475 1" (25mm)

TYPE 800 1" (25mm)

TYPE 800 1 1/2" (38mm)

TYPE 1400 2" (51mm)

Type designates board stiffness defined by flexural rigidity. Type selection depends on duct size, pressure and reinforcement schedule. The 11/2" (38 mm) thickness provides superior thermal value.

Physical Property Data

Property Test Method Value

Operating temperature limits UL 181 Internal: 250 °F (121 °C)
External: 150 °F (66 °C)

Maximum air velocity UL 181 Erosion Test 6,000 fpm (30.5 m/s)

Static pressure limit UL 181 ±2 in. w.g. (500 Pa)

Water vapor sorption ASTM C 1104 <3% by weight at 120 °F (49 °C), 95% R.H.

Mold growth
Fungi resistance
Bacteria resistance UL 181
ASTMG 21
ASTMG 22 Meets requirements
Meets requirements
Meets requirements

Surface burning
characteristics UL 723* Flame spread 25*
Smoke developed 50

Fire retardancy UL 181 Flame penetration: 30 min.

•The surface burning characteristics of these products have been determined in accordance with UL 723. This standard should be used to measure and describe the properties of materials, products or assemblies in response to heat and flame under controlled laboratory conditions and should not be used to describe or appraise the fire hazard or fire risk of materials, products or assemblies under actual fire conditions. However, results of this test may be used as elements of a fire risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use. Values are reported to the nearest 5 rating.

TYPE 475	1" (25mm)
TYPE 800	1" (25mm)
TYPE 800	1 1/2" (38mm)
TYPE 1400	2" (51mm)

Physical Property Data
Property	Test Method	Value
Operating temperature limits	UL 181	Internal: 250 °F (121 °C) External: 150 °F (66 °C)
Maximum air velocity	UL 181 Erosion Test	6,000 fpm (30.5 m/s)
Static pressure limit	UL 181	±2 in. w.g. (500 Pa)
Water vapor sorption	ASTM C 1104	<3% by weight at 120 °F (49 °C), 95% R.H.
Mold growth Fungi resistance Bacteria resistance	UL 181 ASTMG 21 ASTMG 22	Meets requirements Meets requirements Meets requirements
Surface burning characteristics	UL 723*	Flame spread 25* Smoke developed 50
Fire retardancy	UL 181	Flame penetration: 30 min.
•The surface burning characteristics of these products have been determined in accordance with UL 723. This standard should be used to measure and describe the properties of materials, products or assemblies in response to heat and flame under controlled laboratory conditions and should not be used to describe or appraise the fire hazard or fire risk of materials, products or assemblies under actual fire conditions. However, results of this test may be used as elements of a fire risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use. Values are reported to the nearest 5 rating.