Certainteed 90005514 Fiberglass Duct Liner 1 Inch X 48 Inch X 100 Ft

Product Description

The CertainTeed 90005514 is a fiberglass duct liner designed to insulate and acoustically treat metal ductwork in commercial and residential HVAC systems. This product measures 1 inch thick, 48 inches wide, and 100 feet long, making it well suited for lining rectangular sheet metal ducts across large-scale duct fabrication projects. HVAC contractors, sheet metal workers, and mechanical insulation installers rely on fiberglass duct liner to reduce heat loss, control condensation, and cut unwanted airborne noise traveling through duct systems. The result is more consistent supply air temperatures and quieter occupied spaces. The airstream surface of this duct liner features a Permacote coating, a durable finish that resists dust and dirt accumulation and provides added protection against microbial growth. This is important in commercial HVAC applications where indoor air quality and long-term surface integrity are priorities. The fiberglass core is produced using flame-attenuated technology, which creates a very controlled, fine fiber structure. This consistent fiber characteristic allows the liner to process reliably on a wide range of duct fabrication equipment, reducing handling issues and improving shop efficiency. The product meets a comprehensive set of industry standards including ASTM C1071, ASTM E84, ASTM C411, ASTM G22, UL 723, and NFPA 255, confirming its compliance with fire, thermal, and microbial resistance requirements. It also carries GREENGUARD certification and recognition under the NAIMA and EnergyStar Seal and Insulate programs. The rated operating temperature reaches 250 degrees F, and the thermal resistance value is 0.73 square meters degrees C per watt. For HVAC professionals specifying or installing internal duct insulation, this liner delivers reliable thermal and acoustic performance in a consistent, fabrication-friendly format.

• Permacote airstream surface coating resists dust, dirt, and microbial growth for long-term duct liner integrity
• Flame-attenuated fiberglass core ensures consistent fine fiber quality for smooth processing on duct fabrication equipment
• Meets ASTM C1071, UL 723, ASTM E84, NFPA 255, ASTM G22, and ASTM C411 standards with GREENGUARD certification

Product Highlights

This fiberglass duct liner provides dependable thermal insulation and acoustic attenuation for metal duct systems, with a coated airstream surface and flame-attenuated core that support both performance and ease of fabrication in commercial and residential HVAC applications.

Product Information

Standard Information

• Brand: CERTAINTEED
• Manufacturer Part Number: 90005514

Technical Specifications

• Thickness: 1 inch
• Width: 48 inches
• Length: 100 ft
• Material: Fiber Glass
• Operating Temperature Range: 250 degrees F
• R-Value: 0.73 sq. m degrees C/W
• Standards: ASTM C1071, UL 723, ASTM E84, NFPA 255, ASTM G22, ASTM C411, NAIMA, GREENGUARD, EnergyStar Seal and Insulate