Japan HS Code

HS Code 940421: Mattresses : Of cellular rubber or plastics, whether or not covered in Japan

Q: Is HS code 940421 the same across all countries?

Yes — up to the 6-digit level, HS code 940421 is the same in every WCO member country. Beyond 6 digits, each country extends the code for national tariff and statistical use. Japan extends it under Japan HS / Statistical Code.

Q: What system does Japan use to classify HS code 940421?

Japan classifies products under the Customs Tariff Schedules of Japan (Japan HS / Statistical Code; locally 実行関税率表), which extends HS codes to 9 digits. The first 6 digits align with the WCO Harmonized System, and the rest cover national tariff and statistical needs.

Q: Where can I officially look up HS code 940421 in Japan?

The official source is https://www.customs.go.jp/english/. For faster cross-country lookups, TradeInt's HS Code Tool consolidates classifications across all major countries in one place.

What is HS Code 940421 in Japan

Under Japan's Customs Tariff Schedules of Japan (実行関税率表), HS Code 940421 is the WCO Harmonized System subheading for Mattresses : Of cellular rubber or plastics, whether or not covered. This is the most detailed internationally standardized level; Japan extends classifications to 9 digits under its national tariff system. 940421 belongs to Section XX: Miscellaneous manufactured articles, Chapter 94: Furniture; bedding, mattresses, mattress supports, cushions and similar stuffed furnishings; lamps and lighting fittings, not elsewhere specified or included; illuminated signs, illuminated name-plates and the like; prefabricated buildings, Heading 9404: Mattress supports; articles of bedding and similar furnishing (for example, mattresses, quilts, eiderdowns, cushions, pouffes and pillows) fitted with springs or stuffed or internally fitted with any material or of cellular rubber or plastics, whether or not covered.

Explore more 2026 Latest Japan import export trade data and shipment records for HS Code Foam Mattresses on TradeInt global trade data platform

Classification Path of HS Code 940421 in Japan

Section XX

Chapters (94-96) Miscellaneous manufactured articles

Chapter 94

Furniture; bedding, mattresses, mattress supports, cushions and similar stuffed furnishings; lamps and lighting fittings, not elsewhere specified or included; illuminated signs, illuminated name-plates and the like; prefabricated buildings

HS Code 9404

HS Code 940421

Mattresses : Of cellular rubber or plastics, whether or not covered

HS Code 940421000

Mattress supports; articles of bedding and similar furnishing (for example, mattresses, quilts, eiderdowns, cushions, pouffes and pillows) fitted with springs or stuffed or internally fitted with any material or of cellular rubber or plastics, whether or not covered > Of cellular rubber or plastics, whether or not covered 寝具その他これに類する物品（例えば、マットレス、布団、羽根布団、クッション、プフ及び枕。スプリング付きのもの、何らかの材料を詰物とし又は内部に入れたもの及びセルラーラバー製又は多泡性プラスチック製のものに限るものとし、被覆してあるかないかを問わない。）及びマットレスサポート > －－セルラーラバー製又は多泡性プラスチック製のもの（被覆してあるかないかを問わない。）

Japan Tariff Classification: Customs Tariff Schedules of Japan (Japan HS / Statistical Code)

In Japan, HS 940421 is classified under the Customs Tariff Schedules of Japan (実行関税率表) — a 9-digit national extension of the WCO 6-digit Harmonized System.

Tariff schedule Customs Tariff Schedules of Japan (Japan HS / Statistical Code)

Local name 実行関税率表

Digits 9

Official source https://www.customs.go.jp/english/

You know what 940421 means. Now see 2026 latest real trade activity for Foam Mattresses in Japan.

Buyers, suppliers, origin and destination countries, shipment dates, and quantities direct from customs records.

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Top Trading Product of HS Code 9404

Top Japan import Product Under HS Code 9404

1 940490: Other $592.3M 2 940440: Mattress supports; articles of bedding and similar furnishing (for example, mattresses, quilts, eiderdowns, cushions, pouffes and pillows) fitted with springs or stuffed or internally fitted with any material or of cellular rubber or plastics, whether or not covered $323.9M 3 940429: Mattresses : Of other materials $204.7M

Figures shown for 2025.

For more 2026 recent data, search for Japan import trade records

Top Japan export Product Under HS Code 9404

1 940429: Mattresses : Of other materials $21.1M 2 940490: Other $6.6M 3 940421: Mattresses : Of cellular rubber or plastics, whether or not covered $4.2M

Figures shown for 2025.

For more 2026 recent data, search for Japan export trade records

Related HS Code to Japan Foam Mattresses (940421)

Mattresses : Of other materials

Seats of a kind used for aircraft

HS Code 940120

Seats of a kind used for motor vehicles

HS Code 940130

Swivel seats with variable height adjustment

HS Code 940140

Seats other than garden seats or camping equipment, convertible into beds

HS Code 940152

Seats of cane, osier, bamboo or similar materials : Of bamboo

Frequently Asked Questions

What is HS code 940421 in Japan?

HS code 940421 covers Mattresses : Of cellular rubber or plastics, whether or not covered in Japan. It sits in Chapter 94 (Furniture; bedding, mattresses, mattress supports, cushions and similar stuffed furnishings; lamps and lighting fittings, not elsewhere specified or included; illuminated signs, illuminated name-plates and the like; prefabricated buildings), Heading 9404 of the Harmonized System, and is classified under Japan HS / Statistical Code.

Is HS code 940421 the same across all countries?

What system does Japan use to classify HS code 940421?

Where can I officially look up HS code 940421 in Japan?