Laboratory Glass Fiber Prefilters
Coarse glass fiber filter discs used as prefilters in lab vacuum manifolds to trap large particulates before finer filtration. Falls under HTS 7019.90.51.40 as specialized glass fiber filters derived from glass wool for analytical chemistry applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If fused quartz construction for high-temperature lab use
Fused quartz explicitly included in 'glass' definition but may classify as lab glassware if end-use specific.
If textile-impregnated for industrial straining
Impregnated textile fabrics for filtration shift to Chapter 59 textile products.
If imported as parts of complete laboratory filtering apparatus
Parts of filtering/purifying machinery under Chapter 84 supersede raw filter media.
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Import Tips & Compliance
• Provide chemical composition analysis confirming fused silica or glass wool specs per Chapter notes
• Declare as 'prefiltration media only' to avoid classification as lab glassware under 7017
• Watch for contamination risks; ensure cleanroom packaging documentation
Related Products under HTS 7019.90.51.40
Cleanroom Glass Fiber Terminal Filters
Final-stage glass microfiber filters for cleanroom ceiling modules, achieving ISO Class 5 air quality. As glass fiber filters for critical environments, under HTS 7019.90.51.40.
HVAC Glass Fiber Air Filters
These are pleated glass fiber filters designed for residential and commercial HVAC systems to capture dust, pollen, and particulates from airflow. Classified under HTS 7019.90.51.40 as glass fiber filters due to their primary construction from non-woven glass fibers meeting Chapter 70 specifications for glass wool derivatives used in filtration.
HEPA-Grade Glass Fiber Filter Media Rolls
Continuous rolls of microglass paper made from fine glass fibers for manufacturing high-efficiency particulate air (HEPA) filters. Classified as glass fiber filters under HTS 7019.90.51.40 when in filter media form meeting glass wool criteria.
Automotive Cabin Glass Fiber Filters
Panel filters using glass microfiber media for car HVAC systems to filter road dust, pollen, and odors. HTS 7019.90.51.40 covers these as glass fiber filters for vehicular air purification.
Water Filtration Glass Fiber Depth Cartridges
Spun glass fiber cartridges for residential whole-house water sediment filters, trapping rust and particulates via depth loading. As glass fiber filters, they fall under HTS 7019.90.51.40.
High-Temperature Furnace Glass Fiber Filters
Rigid panel filters from binderless glass fiber for industrial furnaces and kilns, handling temperatures up to 1000°F. HTS 7019.90.51.40 for glass fiber filters in extreme heat applications.