5512.21Subheading
Fabrics, woven; of synthetic staple fibres, containing 85% or more by weight of acrylic or modacrylic staple fibres, unbleached or bleached
Section XI — Textiles and textile articles
This is a 6-digit subheading — the most specific level of the international HS. Country tariff schedules extend it further; the US tariff lines (HTS) below refine it to 8–10 digits for duty purposes.
US tariff lines for this subheading are not in the bundled starter dataset yet — the full HTS schedule is coming soon. You can still search by code in the tariff simulator.