# HTS 9902.17.27: Optical attenuators designed to reduce the power level of an optical signal, either in free space or in an optical fiber, such instruments or apparatus specifically designed for telecommunications (provided for in subheading 9013.80.90).

> Plain-language tariff reference from the USITC Harmonized Tariff Schedule on [PlainTariff](https://plaintariff.com/).

## Duty rates

- **General (MFN) rate:** Free
- **Special / FTA rate:** No change
- **Column 2 rate:** No change
- **Corpus rank:** #5752 of 5979 among duty-free tariff lines

## Classification path

- **Section XXII:** [Special Classification Provisions](https://plaintariff.com/section/xxii-special-classification-provisions)
- **HTS code:** 9902.17.27

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*Source: U.S. International Trade Commission Harmonized Tariff Schedule. HTML canonical: https://plaintariff.com/heading/99021727-optical-attenuators-designed-to-reduce-the-power-level-of-an*