HTS code 9902.13.86 covers "Agricultural control nets specially designed to protect mandarin trees from bee pollination, such nets of high density polypropylene monofilament, with interspersed eye knots at regular intervals; each net measuring approximately 441.5 m by 12.8 m or 274.3 m x 12.8 m, having finished edges, presented in rolls (provided for in subheading 6307.90.98) " under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.