Glass Microfiber Filter Discs from Mexico
Circular discs of borosilicate glass microfiber filter paper cut to standard diameters (e.g., 47mm) for air monitoring and liquid filtration. Falls under HTS 4823.20.90.00 as specialty filter paperboard cut to shape, other than rolls. High efficiency for fine particle retention.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Confirm binder-free glass fiber composition; include manufacturer specs for retention ratings; watch for contamination risks during shipping that could affect purity claims