US finds Chinese fiberglass door panels dumped; AD duty likely
The U.S. Department of Commerce issued a final affirmative determination on June 15, 2026, that fiberglass door panels from China are being sold in the United States at less than fair value (LTFV), covering the investigation period July 1–December 31, 2024. This triggers the anti-dumping duty process; the International Trade Commission will now conduct a final injury determination. Importers of Chinese fiberglass door panels should prepare for potential anti-dumping duties retroactive to the investigation start date.
Photo: lbyphoto / Pexels# US Finds Chinese Fiberglass Door Panels Dumped
On June 15, 2026, the U.S. Department of Commerce issued a final affirmative determination that fiberglass door panels from the People's Republic of China are being, or are likely to be, sold in the United States at less than fair value (LTFV). The investigation covered sales during the period of July 1, 2024, through December 31, 2024.
Who Is Affected
This determination applies directly to importers and distributors of fiberglass door panels sourced from China. Fiberglass door panels typically fall under HS Chapter 70 (Glass and glassware, including fiberglass composites classified by end-use). Any U.S. importer or distributor currently sourcing these products from Chinese manufacturers should prepare for potential tariff exposure.
What Happens Next
Under U.S. anti-dumping procedures, a final affirmative LTFV determination by Commerce triggers a separate final injury determination by the U.S. International Trade Commission (ITC). The ITC must establish whether the dumped imports cause or threaten material injury to the domestic fiberglass door-panel industry. If the ITC reaches a final affirmative determination, anti-dumping duties will be imposed on all entries of the subject merchandise.
"The U.S. Department of Commerce determines that fiberglass door panels from the People's Republic of China are being, or are likely to be, sold in the United States at less than fair value."
Anti-dumping duties are typically retroactive to the initiation of the investigation and apply prospectively to all covered shipments entered for consumption in the United States.
What this means for shippers
Importers of Chinese fiberglass door panels must monitor the ITC's forthcoming final injury determination—if affirmative, duties will apply immediately and retroactively to July 1, 2024. Confirm the exact HS classification and Chinese exporter names now; prepare cost estimates for landed-cost calculations once duty rates are published. Delay increases risk of underpayment penalties. /hs-codes/search
