ACT Voluntary
Colorfastness to Light Guideline for
Woven Fabrics
A material’s degree of resistance to the fading effect of light.
Upholstery – Woven Fabrics
AATCC 16.2 Option 1 or 16.3 Option 3
Grade 4 minimum at 40 hours*
Direct Glue Wallcoverings
AATCC 16.2 Option 1 or 16.3 Option 3
Grade 4 minimum at 40 hours*
Wrapped Panels and Upholstered Walls
AATCC 16.2 Option 1 or 16.3 Option 3
Grade 4 minimum at 40 hours*
Drapery
AATCC 16.2 Option 1 or 16.3 Option 3
Grade 4 minimum at 60 hours*
*There is no direct correlation between the number of testing hours and hours of service in the field.