Commerce slaps preliminary antidumping duties on van-type trailers from Canada and Mexico, extending a North American trade fight that has already hit Chinese producers with rates above 130 percent
WASHINGTON, Aug. 5, 2026
The U.S. Department of Commerce has imposed preliminary antidumping duties on van-type trailers and their subassemblies imported from Canada and Mexico, publishing twin Federal Register notices on Tuesday that direct U.S. Customs and Border Protection to begin collecting cash deposits at the border immediately. The determinations, which took effect on August 4, mark the latest and most consequential step in a sprawling trade remedy case that has drawn in the three largest suppliers of dry and refrigerated van trailers to the American market and that could reshape sourcing decisions across the U.S. trucking and logistics industry for years to come.
Commerce preliminarily found that van-type trailers from Canada are being sold, or are likely to be sold, in the United States at less than fair value, assigning a weighted average dumping margin of 4.29 percent to Manac Inc., the only individually examined Canadian exporter, according to the notice published in the Federal Register. The same 4.29 percent rate applies to Di-Mond Sales, Inc., Innovative Trailer Design Industries, Inc., Morgan Canada Corporation, and all other Canadian producers and exporters not individually investigated. Two Canadian companies, Collins Manufacturing Company and GINCOR Werx, were hit with a far steeper rate of 44.86 percent after failing to respond to the department’s quantity and value questionnaire, a penalty rate based on what the agency calls facts available with adverse inferences.
The companion determination for Mexico set preliminary dumping margins ranging from 3.21 percent to 79.92 percent, depending on the company, according to the Federal Register notice and case records compiled by Global Trade Alert, which logged the measure as in force as of August 4. The period of investigation for both countries runs from October 1, 2024, through September 30, 2025.
The new duties do not stand alone. They stack on top of preliminary countervailing duties that Commerce announced in early June, when it found that the governments of China and Mexico unfairly subsidize their trailer industries. In that phase of the case, Chinese producers drew subsidy rates between 82.3 percent and 128.7 percent, while Mexican producers Hyundai de Mexico S.A. de C.V. and Utility Trailer Manufacturing de Mexico received far more modest rates of 1.90 percent and 1.95 percent, according to reporting by Trailer Body Builders, a trade publication that has followed the case closely. Chinese trailers separately face a preliminary antidumping rate of 130.76 percent announced in June, a figure the petitioning coalition called an important victory for American manufacturing in a statement distributed through PR Newswire.
A Case Nearly a Year in the Making
The investigations trace back to a petition filed on November 20, 2025, by the American Trailer Manufacturers Coalition, a group of three major U.S. producers: Great Dane LLC, Stoughton Trailers LLC, and Wabash Corporation. The coalition alleged that imports of van-type trailers from Canada, China, and Mexico were being dumped in the U.S. market and, in the case of China and Mexico, subsidized by their governments, injuring domestic manufacturers already weathering one of the deepest freight recessions in memory.
Commerce formally initiated the antidumping investigations on January 26, 2026, with an applicable initiation date of January 20. The U.S. International Trade Commission had earlier found a reasonable indication that the domestic industry was materially injured by the imports, allowing the case to proceed, and in June the commission scheduled the final phase of its injury investigations covering all three countries.
The path since initiation has been anything but smooth. In May, Commerce postponed its preliminary antidumping determinations for Canada and Mexico to late July. At the petitioner’s request, the department terminated its countervailing duty investigation of Canadian trailers entirely on May 27, sparing Canadian builders from subsidy duties. That left the antidumping track as the sole exposure for Canadian producers, an exposure that crystallized this week with the publication of the preliminary determination.
Robert E. DeFrancesco, trade counsel to the petitioners and a partner in the international trade practice at Wiley, framed the earlier subsidy findings in stark terms. “When foreign governments prop up exports, U.S. companies and workers pay the price,” he said in a statement reported by Trailer Body Builders, adding that the Commerce decisions help counter unfair practices in Mexico, where the department found the largest producer also received subsidies for a related product, and in China, where the primary trailer producer is part of a state-owned entity.
The coalition, for its part, described the earlier preliminary duties as “the first step towards introducing fairness in the U.S. van-type trailer market,” according to a statement cited in trade press reports.
The Transshipment Question
Perhaps the most closely watched element of Tuesday’s Canada notice concerns Vanguard Refrigerated Trailer Co., Ltd., one of the mandatory respondents Commerce selected for individual examination. In a finding with significant implications for supply chain structuring, the department preliminarily determined that Vanguard made no sales of subject Canadian merchandise at all, because the record evidence indicated that the van-type trailers it shipped from Canada to the United States during the investigation period were composed of Chinese-origin merchandise that falls within the scope of the separate, and much harsher, China investigations.
Commerce declined to calculate a company-specific dumping margin for Vanguard as a result. The practical consequence is that trailers and subassemblies of Chinese origin routed through Canada do not escape the triple-digit China duties by crossing the northern border. The department has established third-country case numbers in CBP’s Automated Commercial Environment, C-122-218 and A-122-219, under which importers must report entries of Chinese subassemblies or trailers containing Chinese subassemblies that arrive from Canada. For trailers that mix Canadian fabrication with Chinese components, only the Chinese subassembly portion is subject to the China countervailing duties, according to the Federal Register notice.
Trade lawyers say the arrangement reflects a broader enforcement posture that has hardened across the administration’s trade remedy program in 2026, with Commerce and CBP increasingly focused on circumvention through third countries. Importers, producers, or exporters routing subject merchandise through other third countries must now ask Commerce to establish country-specific case numbers, a signal that the agency expects the transshipment map to keep shifting as duties bite.
What Importers Face at the Border
Effective with the August 4 publication, CBP will suspend liquidation of all entries of subject merchandise from Canada and Mexico and require cash deposits equal to the applicable preliminary dumping margins. For most Canadian trailers that means 4.29 percent on top of any other applicable duties; for the two non-cooperating Canadian companies it means 44.86 percent; and for Mexican producers it means anywhere from 3.21 percent to 79.92 percent depending on the exporter.
The scope of the investigation is deliberately broad. It covers van-type trailers with a gross vehicle weight rating above 26,000 pounds, whether finished or unfinished, assembled or unassembled, and it reaches deep into the bill of materials. Covered subassemblies include subframes, nose wall and side wall and roof sections, rear door frames, door assemblies, rear impact guards, coupler assemblies, running gear and axle assemblies, and landing gear. Components entered on the same bill of lading as trailers or subassemblies, from hub and drum assemblies to refrigeration units, are also swept in. Commerce even modified the scope at the preliminary stage to add an additional tariff classification, and it noted that processing in a third country, such as trimming, painting, or assembly, does not remove a product from coverage.
For fleets and dealers, the immediate effect is priced into every new trailer crossing the border. Manac, Canada’s largest trailer manufacturer, requested on July 27 that Commerce postpone its final determination and extend provisional measures from four months to six, a request the department granted because Manac accounts for a significant share of subject exports. The final Canada determination is now due no later than 135 days after publication of the preliminary finding, pushing a decision toward the end of the year, with the ITC’s final injury vote to follow. The final determination for China is expected on August 24, according to the American Trailer Manufacturers Coalition, while Mexico’s final antidumping determination is expected in October and its countervailing duty finding in December.
An Industry Under Pressure
The trailer trade case lands on an industry that has been through a brutal cycle. U.S. trailer orders collapsed from pandemic-era highs as freight rates sagged, and domestic producers argued to the ITC that low-priced imports compounded the downturn, taking sales and depressing prices precisely when the market was weakest. Respondents countered at the commission’s hearing that the industry’s troubles reflect a tough downcycle rather than unfair competition, a debate chronicled by Trailer Body Builders in its coverage of the January hearing.
The stakes are substantial on both sides of the border. Canadian and Mexican plants, some of them owned by U.S. brands, feed dry vans and refrigerated trailers into American fleets, and several U.S. manufacturers operate assembly operations in Mexico that now face duties on their own imports. Commerce’s decision to examine Hyundai de Mexico and Utility Trailer Manufacturing de Mexico, both tied to established North American trailer brands, means the duties will be felt inside the U.S. industry as well as by foreign competitors.
Economists who track trade remedies note that antidumping and countervailing duties tend to raise prices for downstream buyers even when margins are modest, because cash deposit requirements add cost, uncertainty, and administrative burden to every entry. With for-hire carriers still operating on thin margins, equipment cost inflation feeds directly into freight rates over time. Fleet purchasing managers, who typically plan trailer acquisitions years ahead, must now model duty scenarios that will not be final until the ITC votes, likely in early 2027 for some segments of the case.
The Wider Tariff Backdrop
The trailer duties arrive amid the most turbulent stretch of U.S. trade policy in decades. After the Supreme Court’s February ruling invalidated tariffs imposed under the International Emergency Economic Powers Act, the administration rebuilt its tariff architecture on other legal foundations, including a Section 122 surcharge that expired in July and a new Section 301 action, effective July 24, that layers duties of 10 to 12.5 percent on most products of 60 economies over their alleged failure to police forced labor in supply chains. Canada faces an additional blow on August 19, when 50 percent duties on hundreds of tariff lines of Canadian goods take effect under a separate proclamation, a measure that logistics providers such as OIA Global have flagged to clients as applying even to goods that qualify under the U.S.-Mexico-Canada Agreement.
Against that backdrop, the trailer case is a reminder that the traditional trade remedy machinery, petitions, investigations, preliminary and final determinations, continues to grind forward alongside the headline-grabbing presidential tariff actions. Unlike tariffs imposed by proclamation, antidumping and countervailing duties are company-specific, product-specific, and durable: once orders are in place, they typically remain for at least five years and are often renewed for decades, as longstanding U.S. orders on products from steel pipe to preserved mushrooms attest.
For Canadian producers, the relatively low 4.29 percent preliminary rate is a partial reprieve, especially compared with the fate of Chinese producers and the two Canadian companies that declined to cooperate. But it still adds friction to a deeply integrated North American supply chain in which subassemblies, components, and finished trailers move constantly across borders. And with the 50 percent Section 338 duties on other Canadian goods looming two weeks away, cross-border manufacturers are confronting a cumulative tariff burden with little modern precedent.
The Mexico determination carries its own USMCA subtext. The wide spread of preliminary margins, from barely above de minimis to nearly 80 percent, reflects sharply different pricing behavior among Mexican exporters, and it means the commercial impact will be highly uneven. Producers at the low end can largely absorb or pass through the deposit; those at the high end are effectively priced out of the U.S. market until the final determination, if not permanently. For companies weighing nearshoring investments in Mexican manufacturing, the case is a reminder that USMCA preference eliminates ordinary customs duties but offers no shelter whatsoever from the trade remedy laws, which apply to fairly traded and preferential goods alike.
The Long Shadow of an Order
It is worth pausing on what is actually at stake if the preliminary duties become permanent. Under the Tariff Act of 1930, an antidumping order remains in place until Commerce and the ITC conduct a sunset review, which occurs five years after the order issues and every five years thereafter. If the agencies find that revoking the order would likely lead to continued or recurring dumping and injury, the order continues for another five-year cycle. History suggests those reviews rarely end in revocation on the first pass. Just last week, Commerce announced the continuation of antidumping duty orders on certain preserved mushrooms from Chile, China, India, and Indonesia, orders that date to well over a decade ago, after determining that revocation would likely lead to renewed dumping and injury. Longstanding orders on Chinese seamless carbon and alloy steel pipe were likewise extended this month.
The lesson for the trailer industry is that Tuesday’s cash deposit rates, however modest for most Canadian producers, may be the opening terms of a decades-long regime rather than a temporary inconvenience. Companies on all sides of the case are behaving accordingly. Exporters that cooperated fully with Commerce secured individually calculated rates; those that ignored the department’s questionnaires drew punitive margins that will follow them into any final order. The gap between 4.29 percent and 44.86 percent for Canadian producers is, in effect, the price of non-participation in the process.
There is also a structural asymmetry worth noting. Cash deposits paid at the preliminary stage are estimates, not final liabilities. If final rates come in lower, importers can recover the difference with interest after liquidation; if final rates rise, importers of record owe the shortfall. That retrospective feature of the U.S. system, unique among major trading nations, means the true cost of importing subject trailers between now and the final determinations will not be known for years, after administrative reviews establish actual assessment rates. Sophisticated importers price that uncertainty into contracts through duty allocation clauses; smaller dealers often discover it only when a supplemental bill arrives.
Dealers, Fleets, and the Ripple Effects
The commercial ripples are already visible. Trailer dealers who stock Canadian-built dry vans and refrigerated units must now decide whether to absorb the deposit, pass it through, or shift orders to U.S. plants that are, by the petitioners’ own account, running below capacity. Lead times at domestic factories, which stretched during the pandemic boom and then collapsed with the freight recession, could lengthen again if orders migrate south of the border in volume. Wabash reported in its second quarter results that market conditions were beginning to turn, a signal that the domestic industry sees the combination of cyclical recovery and trade relief as a genuine inflection point.
Refrigerated carriers face a particular squeeze. Reefer trailers are more complex and expensive than dry vans, imported units account for a meaningful slice of the U.S. reefer fleet, and the scope’s inclusion of refrigeration units entered with trailers means even the cold chain hardware is implicated when it ships on the same bill of lading. Grocery and food service distribution networks, which replace reefer fleets on tight cycles for food safety and fuel efficiency reasons, will feel equipment cost inflation sooner than the general freight market.
Leasing companies, which own large trailer pools and effectively set the marginal price of trailer capacity, are recalculating residual values. A durable duty regime raises replacement costs, which tends to lift used trailer values and lease rates across the board, including for equipment that never crossed a border. That dynamic, familiar from past trade actions on chassis and intermodal containers, spreads the cost of the duties well beyond importers to every shipper that moves goods in a van trailer.
What Comes Next
Several milestones now loom. Commerce intends to verify the information underlying its preliminary findings before issuing final determinations, and interested parties will file case briefs and rebuttals in the coming months. A final scope decision, resolving exactly which products and subassemblies are covered, will be issued alongside the final China determinations. If Commerce’s final determinations are affirmative, the ITC will make its final injury determinations within the statutory windows, and only if the commission finds injury will permanent orders issue.
Importers should act now rather than wait for the final numbers, trade advisers say. That means reviewing entry classifications against the expanded scope, confirming which case numbers apply to mixed-origin trailers, posting cash deposits correctly to avoid penalties, and documenting the origin of every major subassembly. Companies that source Chinese components through Canadian or Mexican operations face particular urgency, given Commerce’s aggressive treatment of third-country processing in this case.
For the domestic coalition, the preliminary duties validate a strategy of using the trade remedy laws to address import competition at a moment when the political climate could hardly be more receptive. For buyers of trailers, the outcome will be measured in acquisition costs over the next equipment cycle. And for trade practitioners, the Vanguard finding will stand as a marker of how far Commerce is willing to go to trace origin through North American supply chains, a question with resonance well beyond the trailer industry.
The final determinations, and the ITC’s injury votes, will decide whether the preliminary rates harden into orders that endure for years. Until then, every van trailer crossing the northern or southern border carries a new line item, payable in cash at entry, courtesy of a petition filed nine months ago by three American manufacturers who argued that the playing field had tilted against them.