Import duty / Chapter 39 / Heading 3923
Heading 3923 covers 7 tariff lines in LoadLoom's table; 6 of them clear duty-free under USMCA for goods made in Canada, the US or Mexico. Published US and Canadian rates below, verified October 2026. Pick the line that matches your goods for the worked example and border steps.
| HS code | Goods | US duty | Canada duty | USMCA |
|---|---|---|---|---|
| 3923.10 | Plastics; boxes, cases, crates and similar articles for the conveyance or packing of goods | Free | Free | Not eligible |
| 3923.21 | Ethylene polymers; sacks and bags (including cones), for the conveyance or packing of goods | 3% | 6.5% | Free with certificate |
| 3923.29 | Plastics; sacks and bags (including cones), for the conveyance or packing of goods, of plastics other than ethylene polymers | 3% | 6.5% | Free with certificate |
| 3923.30 | Plastics; carboys, bottles, flasks and similar articles, for the conveyance or packing of goods | 3% | 6.5% | Free with certificate |
| 3923.40 | Plastics; spools, cops, bobbins and similar supports, for the conveyance or packing of goods | 5.3% | Free | Free with certificate |
| 3923.50 | Plastics; stoppers, lids, caps and other closures, for the conveyance or packing of goods | 5.3% | 6.5% | Free with certificate |
| 3923.90 | Plastics; articles for the conveyance or packing of goods n.e.c. in heading no. 3923 | 3% | 6.5% | Free with certificate |
This page is a free reference for shippers, not a customs ruling. Final classification and duty are determined by the licensed customs broker at entry, and government amounts are always billed at actual. Rates change with each tariff edition and trade action.
