1. JM Duct Liner Product Offering
Linacoustic® RC
Duct Liner PM
Permacote® Linacoustic® RC-HP
LinaTex®
Permacote® Linacoustic® R-300
Spiracoustic Plus®
Core Type
Pot & Marble
Textile Fiber
Rotary
Product Type
Roll
Board (3 pcf)
Kerfed Board
Thickness
0.5, 1”, 1.5”, 2” 1”
0.5, 1”, 1.5”
1”, 1.5”, 2”
Product Configuration
core + glass mat
core
Coating
surface & edge
edge only
Application
Duct Liner
Plenum Liner Board
Round Duct Liner
NRC (1” thickness)
0.70
0.75
density dependent
What is the difference?
Permacote Linacoustic R-300
Board product made using Rotary Technology
Linacoustic RC-HP
Higher NRC due to density difference
Only available in 1”.

2. Duct Liner Product Comparison
Manufacturer JM
Knauf OC
CertainTeed
Product
Duct Liner PM
Linacoustic® RC
Sonic XP™
QuietR™
ToughGard® R
Core Type
Pot & Marble
Rotary
Formaldehyde-free 
Available
Surface Coating
Air Velocity (fpm)
5000
6000
NRC (1” thickness)
0.70
GREENGUARD
Gold
Post Consumer Recycled Content
60%
ULE certified
5% (57% total)
SCS certified
25% total
No certification
Selling Points for JM
Pot & Marble Technology
Excellent core integrity & density distribution
Consistent quality = improved productivity for Sheet Metal Shops
Linacoustic RC: glass mat & Permacote coating
Increased surface durability & water repellency
Most extensive product offering
Pot & Marble, textile and round liner (Spiracoustic Plus)
Proven performance: strong brand recognition & #1 market position 2

3. Non-Fiber Glass Competitive Duct Liner Systems
Armacell
K-Flex
Ductmate JM
Product
AP Coilflex™
Duct Liner Gray
PolyArmor
Duct Liner Portfolio
Technology Type
Elastomeric Foam
Elastomeric
Foam
Polyester Fiber
Fiber Glass
Continuous Temperature
180F
220F
250F
K-value
(1” thickness)
0.25
0.24
R-value 4
4.2
4.3
NRC (1” thickness)
0.6
0.55
0.65
0.7 (RC) & 0.75 (RC-HP)
Air Velocity (fpm)
4000
6000