HVAC Flame Duct Liner PMMA
Flame retardant poly(methyl methacrylate) (PMMA) sheets used as liners in HVAC ducts to enhance fire safety. These rigid, non-cellular acrylic sheets are not reinforced, laminated, or combined with other materials, and are classified under tariff item 3920.51.00 as plates, sheets, film, foil, and strip of poly(methyl methacrylate).
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the sheets are made of other acrylic polymers rather than poly(methyl methacrylate)
Other acrylic polymer sheets not specifically poly(methyl methacrylate) fall under this subheading.
If the sheets are cellular or reinforced, laminated, or supported with other materials
Cellular or reinforced plastic sheets are classified under heading 39.21.
If the sheets are cut into shapes other than rectangles and further worked
Profile shapes and rods of plastics are classified under heading 39.16.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the PMMA sheets are non-cellular and not reinforced, laminated, or supported with other materials to qualify for 3920.51.00
• Provide a detailed product description and material composition to the CBSA to avoid classification disputes
• Verify if the flame retardant additives affect the tariff classification under Chapter 39 notes
Related Products under Tariff item 3920.51.00
Acrylic Display Stand Sheet
Clear poly(methyl methacrylate) sheet cut for retail display stands, noncellular and unsupported. Classified under tariff item 3920.51.00 as a PMMA sheet not reinforced or laminated.
Acrylic Laser Cutting Blank
Cast poly(methyl methacrylate) (PMMA) sheets, 1/8-inch thick, in 24x48 inch sizes, optimized for CO2 laser engraving and cutting into signs or awards. These non-cellular, unreinforced PMMA sheets are classified under tariff item 3920.51.00 as plates, sheets, film, foil, and strip of poly(methyl methacrylate).
Acrylic Model Making Sheets
Polished, non-cellular poly(methyl methacrylate) (PMMA) sheets in assorted colors, 0.06-inch thick, for architectural scale models. These non-cellular, unreinforced PMMA sheets are classified under tariff item 3920.51.00 as plates, sheets, film, foil, and strip of poly(methyl methacrylate).
Anti-Fire PMMA Exhibit Sheet
A flame-retardant rigid poly(methyl methacrylate) sheet used for museum exhibit cases and trade show backdrops. The flame retardants are additives, and the sheet remains noncellular and unreinforced, fitting tariff item 3920.51.00.
Anti-Scratch PMMA Protective Sheet
Hard-coated poly(methyl methacrylate) sheet for machine guards and barriers, noncellular. Falls under tariff item 3920.51.00 as a PMMA sheet where coating is minimal surface modification.
Black Acrylic Engraving Stock
Solid black poly(methyl methacrylate) sheet for laser/rotary engraving awards and signs. Noncellular, unsupported, classified under tariff item 3920.51.00 as a PMMA sheet.