Industrial Door Closer Spring from Germany
High-torque helical torsion spring from 10.2 mm wire for fire-rated industrial roll-up doors. Classified HTS 7320.20.50.45 meeting helical and wire dimension requirements. 1 million cycle rating.
Duty Rate — Germany → United States
13.9%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• UL 325 certification required for automatic closing mechanisms
• Torque adjustment range documentation prevents underpowered classification
• Heat-treated wire specs confirm high-cycle durability claims