Porro Prism Binocular Mounting Assembly from Canada
Mounting frame for binoculars embedding Porro prisms (9001) and achromatic lenses (9002) for wide-field viewing. HTS 9005.90.40.00 applies to such assemblies incorporating both components as telescope accessories. Used in high-end birding and marine binoculars.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Optical alignment certificates prevent disputes over 'incorporation' claims
• Avoid bulk packaging that suggests unfinished goods; retail-ready incurs different scrutiny
• Declare exact prism count and lens curvature for accurate valuation