Double-Pane Insulated Glass Unit
A multiple-walled insulating unit consisting of two glass panes separated by an air or gas-filled spacer, designed primarily for use in windows to reduce heat transfer. It falls under HTS 7008.00.00.00 as it is a multiple-walled insulating unit of glass, meeting the definition without further processing beyond assembly. These units enhance energy efficiency in residential and commercial buildings.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If featuring a low-emissivity (low-E) coating
Float glass sheets with absorbent or reflecting layers like low-E coatings are classified under heading 7005, not assembled insulating units.
If aluminum spacer frames dominate the essential character
If the unit is imported as a complete aluminum window frame assembly with glass, it shifts to heading 7610 for aluminum structures.
If for bulk safety-tempered glass panes without assembly
Individual tempered glass sheets intended for later unit assembly remain under heading 7007, not as multiple-walled units.
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Import Tips & Compliance
• Verify the unit's hermetic seal integrity and gas fill type (e.g
• argon) with test certificates to comply with energy standards like NFRC
• Include detailed assembly diagrams and spacer material specs in documentation to avoid misclassification as unfinished sheets
Related Products under HTS 7008.00.00.00
Argon-Filled Double-Glazed Window Unit
A sealed double-pane glass unit filled with argon gas between panes to minimize thermal conductivity, commonly used in energy-efficient fenestration. It qualifies for HTS 7008.00.00.00 as a multiple-walled insulating unit where the glass walls provide the insulating function via gas encapsulation. Prevents condensation and improves acoustics.
Soundproof Multiple-Walled Glass Unit
Insulated glass unit with asymmetric pane thicknesses and air space tuned for noise reduction in urban windows. HTS 7008.00.00.00 applies as multiple-walled glass for insulation, with acoustic benefits secondary. Common in hotels near airports.
Fire-Rated Glazed Insulating Unit
Multiple-walled glass with intumescent layers for 20-60 min fire resistance in partitions. HTS 7008.00.00.00 for insulating walls of glass. Building code compliant.
Custom Curved Insulated Glass Unit
Bent double-pane unit for arched windows, sealed post-annealing. 7008.00.00.00 as multi-walled per note (a).
Patio Door IG Unit
Large-format double-glazed for sliding doors, gas-filled. Pure 7008 classification.
Triple-Glazed Insulating Glass Unit
An advanced multiple-walled unit with three glass panes and two sealed chambers filled with inert gas for superior thermal insulation in high-performance windows. Classified under HTS 7008.00.00.00 due to its multi-layered glass construction designed specifically for insulation. Ideal for cold climates or energy-efficient building codes.