0505.10.00 - Feathers of a kind used for stuffing; down

This HTS category, 0505.10.00, specifically covers feathers and down that are intended for use as stuffing material. This includes a wide range of avian plumage, such as goose down, duck down, and various types of feathers, provided their primary intended use is for filling pillows, duvets, apparel, or other articles where bulk and insulation are key. The "cleaned, disinfected or treated for preservation" aspect signifies that minor processing for hygiene and shelf-life is permissible within this heading, but no significant alterations or manufacturing into finished goods are included.

Distinguishing this category from its sibling, 0505.90 (Other), is crucial. While 0505.90 encompasses all other bird parts, feathers, and down not specifically designated for stuffing and not further worked, 0505.10.00 has a defined functional purpose. This means that decorative feathers, feathers used for craft purposes, or even feathers that are merely cleaned but not designated for stuffing would likely fall under the broader "Other" category. The intent of use is the primary differentiator here.

The subcategories for this heading delve into more specific quality and testing standards relevant to stuffing materials. The first subcategory acknowledges goods that meet specific ASTM D4522 and IDFB testing regulations. These regulations are vital for ensuring the quality, fill power, and safety of down and feathers used in commercial stuffing applications. The second subcategory, "Other," would capture stuffing materials that do not meet these specific regulatory benchmarks but are still intended for use as stuffing.