Duct Liner

Johns Manville Linacoustic® R-300 is a rigid fiberglass board that is specifically designed for lining HVAC plenums and air distribution ductwork, and meets or exceeds all ASTM C 1071 Type II duct liner requirements. Linacoustic R-300’s airstream surface is coated with our proprietary Permacote® coating, which provides a durable and smooth surface that is resistant to the accumulation of dust and dirt. It also provides added product protection against microbial growth. Linacoustic R-300 provides exceptional durability and superior thermal and acoustical performance to help you create more comfortable and energy efficient indoor environments for commercial and residential building occupants.

NRC: 0.9 (R6)
R-value: 6.3 (1.5")
ASTM C1071 Type II: Complies
Greenguard: Certified 
Recycled Content: 11%
Shipped with E³ Pallet™ Technology

Johns Manville Linacoustic® RC duct liner provides superior thermal and acoustical performance and improved handling during fabrication when lining metal ducts. Linacoustic RC’s airstream surface is coated with our proprietary Permacote® coating, which provides a durable surface that is resistant to dust and dirt and provides added product protection against microbial growth. Our unique flame-attenuated technology yields a very controlled fine fiber characteristic that results in a fiberglass core unmatched by our competitors. This ensures consistently high performance and easy processing on a wide range of duct fabrication equipment. Building occupants benefit from less unwanted noise and more consistent temperatures for improved comfort.

NRC: 0.85 (R6)
R Value: 6.3 ( 1.5")
ASTM C1071 Type I: Complies
Greenguard: Certified

Johns Manville new and improved Permacote® Linacoustic® RC-HP is a flexible duct liner insulation that provides enhanced acoustical performance versus standard duct liners. It has been recently redesigned to include a glass mat on the airstream surface that is coated with our proprietary Permacote® coating. This provides a durable surface that is resistant to dust and dirt and provides added product protection against microbial growth. Our unique flame-attenuated technology yields a very controlled fine fiber characteristic that results in a fiberglass core unmatched by our competitors. This ensures consistently high performance and easy processing on a wide range of duct fabrication equipment. Building occupants benefit from less unwanted noise and more consistent temperatures for improved comfort. 

NRC: 0.75 (R4.3)
R Value: 4.3 (1")
ASTM C1071 Type I: Complies

Johns Manville Spiracoustic Plus® is a spiral duct liner system engineered to provide superior acoustical and thermal performance for spiral air duct interiors with an airstream diameter of 6 inches and larger. Spiracoustic Plus delivers significantly improved acoustical and thermal performance compared to double-wall construction, all at a competitive cost for the system. It is manufactured with evenly-spaced kerfs to allow the material to conform to the inside diameter of spiral ducts, producing a finished airstream surface. This surface is coated with our proprietary Permacote® coating, which provides a durable surface and added product protection against microbial growth. As an added benefit, the exterior surface is laminated with a tough fire-resistant FSK facing. 

NRC: 0.85 (R6)
R Value: 6.4 ( 1.5")
ASTM C1071 Type III: Complies
Greenguard: Certified
Recycled Content: 11%

Spiral SG® Double Wall Insulation is a thermal and acoustical, rotary process, fiber insulation designed for use in double-wall spiral HVAC ducts.  To optimize performance, the product is offered in a range of densities and thicknesses. The resilient fiberglass blankets resist damage during fabrication and carry a UL Fire Hazard Classification rating of 25/50.

Service Temp Max: 350°F (177°C)
Recycled Content: 18%
GreenGuard: Certified