Quiet Liner™ - Natural Cotton Fiber Liner
Natural Cotton Fiber Insulation with anti-microbial fabric facing
Quiet Liner™ is a high-performance natural fiber acoustical duct liner designed to reduce HVAC noise while also improving thermal insulation performance. Made from non-irritating, fiberglass-free fibers, Quiet Liner helps absorb unwanted sound within sheet metal ductwork, reduces heat loss or gain, and provides a safer, easier-to-handle alternative to traditional duct liners. Its durable black fire-resistant facing and antimicrobial treatment help resist microbial growth while maintaining long-lasting performance in commercial and industrial HVAC systems.
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Product Specs
Applications
Primary Use is HVAC supply and return duct lining. Other applicaitons include: mechanical room noise control, air handler cabinet lining, VAV box acoustical treatment, fan housing and fan plenum lining, generator room ventilation duct treatment, equipment enclosure sound absorption, compressor room noise reduction, acoustical core for DIY panel builds, recording studio HVAC noise control, theater and auditorium duct attenuation, broadcast and podcast studio ventilation systems, data center and server room HVAC treatment, sound attenuation inside custom acoustic enclosures, industrial process ventilation noise control, OEM equipment cabinet lining, interior lining for acoustic plenums and transfer air paths, noise control inside transportation or mobile equipment enclosures, acoustic lining inside woodworking dust collection systems, sound absorption inside elevator equipment rooms, noise reduction within pump enclosures, acoustical treatment behind perforated metal wall systems, interior absorption layer in custom sound traps and baffle boxes, sound control inside test chambers and equipment mockups, HVAC noise mitigation in churches, schools, restaurants, and open offices, acoustic lining for cleanable utility or maintenance spaces, reduction of metal “oil canning” resonance in large sheet metal enclosures, supplemental sound absorption in prefab modular buildings
Material Composition
Natural cotton fiber acoustical core with black antimicrobial bonded to face
Thickness
Standard: 1/2", 1" and 2"
Optional: 1-1/2" (note: minimum order quantity applies, call for details)Density
1/2" thick: 3.0 lbs. pcf
1", 1-1/2" and 2": 1.5 lbs. pcfSize
1/2" thick: 48" wide x 100' long
1" thick: 48" wide x 50' long
1-1/2" thick: 48" wide x 25' long
2" thick: 48" wide x 25' longColor
Recycled blue cotton fibers with black antimicrobial fabric facing
Installation Method
Adhere to surface
Mechanical fasteners or stick pins -
Acoustical Specs
Quiet Liner – Sound Absorption Coefficients Mount 125Hz 250Hz 500Hz 1KHz 2KHz 4KHz NRC ½″ – 3lb./cf. A .00 .11 .26 .54 .70 .83 .40 1″ – 1.5lb./cf. A .07 .33 .72 .99 .99 .99 .75 1½″ – 1.5lb./cf. A .07 .30 .86 1.10 1.05 1.03 .85 2″ – 1.5lb./cf. A .35 .94 1.32 1.22 1.06 1.03 1.15 -
Thermal Resistance (R-Value)
Thermal Performance of HVAC Acoustic Insulation Tested in accordance with ASTM C518 PRODUCT K-VALUE C-VALUE R-VALUE Thickness Inch (mm) BTU×in(h×ft2×°F) W÷(m×°C) BTU×in*h×ft2×°F) W÷(m×°C) R W÷(m×°C) ½ (13) .25 .036 .50 2.84 2.0 .35 1 (25) .25 .036 .25 1.42 4.2 .74 1½ (38) .25 .036 .17 0.97 6.0 1.06 2 (51) .25 .036 .13 0.74 8.0 1.41 The higher the R-Value, the greater the insulating power. -
Environmental
Physical Properties of HVAC Acoustic Insulation PROPERTIES PERFORMANCE TEST METHOD Operating Limits
Temperature VelocityMaximum 250° (121°C)
5000 fpmASTM C 411
ASTM C 1071Surface Burning Characteristics
(Fire Hazard Classification)Flame Spread Max: 25
Smoke Developed Max: 50
Class A / Class 1ASTM E 84
UL 723
NFPA 255Corrosion Resistance Pass – No Growth ASTM G 21
ASTM C 1338
ASTM C 739Bacteria Resistance Pass – No Growth ASTM G 22 Water Vapor Absorption Less Than 1% By Weight ASTM C 1104 Product Compliance of Acoustic Duct Liner Quiet Natural Fiber Acoustic Duct Liner has the physical properties that regularly meet the requirements of the following current specifications, standards, and codes. FIRE SAFETY STANDARDS
NFPA 90A Installation of Air Conditioning and Ventilating Systems
NFPA 90B Installation of Warm Air Heating and Air Conditioning SystemBUILDING CODES
ICBO International Conference of Building Officials
BOCA Building Officials and Code Administrators
CABO Council of American Building Officials
SBCCI Southern Building Code Congress International




