Face weight is measured as per unit area of pile yarn floor coverings according to ASTM (American Society for Testing Materials) method D-5848. Due to several processes involved in manufacturing, such as shearing, the actual finished weight may reflect a variance of up to 7%. The weight is determined by compensating for the factor of commercial moisture regain, as defined in ASTM D-1909. The ASTM measurements are accepted industry norms and the most accurate means of determining face weight.
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