7321.82 - For liquid fuel:

HTS code 7321.82 specifically covers nonelectric domestic appliances designed for liquid fuel, such as kerosene or paraffin. These appliances are made of iron or steel and are intended for use in cooking, heating, or warming food. The key defining characteristic for this category is the type of fuel utilized, which must be liquid.

This category is distinguished from its sibling categories by its exclusive focus on liquid fuel. HTS 7321.81 pertains to appliances that operate on gas fuel or a combination of gas and other fuels. Meanwhile, HTS 7321.89.00 encompasses "other" appliances, including those designed for solid fuels. Therefore, proper classification hinges on accurately identifying the primary fuel source of the appliance.

Within HTS 7321.82, further subdivisions exist to refine classification based on portability. The subcategory 7321.82.10.00 is designated for portable appliances, implying a design for ease of movement and potentially smaller size. The subcategory 7321.82.50.00 covers all other appliances within this liquid fuel category that are not classified as portable, including larger or stationary units.