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K-FLEX DUCT LINER GRAY
Technical specifications
FLAME SPREAD / SMOKE DEVELOPMENT
<25/50 (ASTM E84)
HOT SURFACE PERFORMANCE
No Cracking or Delamination (ASTM C411)
OPERATING TEMPERATURE RANGE 
-297°F* (-183°C) to +220°F (+104°C)
PSA: -40°F (-40°C) to +200°F (93°C)
(ASTM C534)
*For applications below -40°F (-40°C), contact K-FLEX technical support.
THERMAL CONDUCTIVITY 75°F (24°C) MEAN TEMP
0.25 (0.036) (ASTM C177)
UV / WEATHER RESISTANCE
Pass* (QUV Chamber Test)
*Where UV sterilizing equipment is used within the air handling system, protect K-FLEX Duct Liner Gray with K-FLEX 374 Protective Coating. Refer to K-FLEX 374 technical data sheet for more information.
WATER VAPOR PERMEABILITY (DRY CUP: ELASTOMERIC INSULATION)
<0.06 perm-in (ASTM E96)
DENSITY
3-6 lb/ft3 (ASTM D1667)
Contact us for more information about this product
THERMAL
HVAC/R
PLUMBING
SOLAR
ACOUSTIC
BUILDING INSULATION
EQUIPMENT INSULATION
HVAC/R
PLUMBING
Order
999