Plastic hard drive storage case
The item is an antistatic enclosure
designed to protect a computer internal hard drive. It is made of red
polypropylene (PP) plastic material with an interior padding that is made of
foam that is laminated with a top layer of Mylar that compresses and conforms
to protect each specific internal hard drive. The case has a secure safety
latch, a reversible paper insert label to record the contents of each case and
a clear label window.
Subheading HS: 3924.90.
Source: https://rulings.cbp.gov/index.asp, July 6, 2017 (N287024)