The scope of this investigation covers all types of youth and adult mattresses. The term “mattress”
denotes an assembly of materials that at a minimum includes a “core,” which provides the main
support system of the mattress, and may consist of innersprings, foam, other resilient filling, or a
combination of these materials. Mattresses may also contain (1) “upholstery,” the material between
the core and the top panel of the ticking on a single-sided mattress, or between the core and the top
and bottom panel of the ticking on a double-sided mattress; and/or (2) “ticking,” the outermost layer
of fabric or other material (e.g., vinyl) that encloses the core and any upholstery, also known as a
• The scope of this investigation is restricted to only “adult mattresses” and “youth mattresses.” “Adult
mattresses” have a width exceeding 35 inches, a length exceeding 72 inches, and a depth exceeding 3
inches on a nominal basis. Such mattresses are frequently described as “twin,” “extra-long twin,”
“full,” “queen,” “king,” or “California king” mattresses. “Youth mattresses” have a width exceeding
27 inches, a length exceeding 51 inches, and a depth exceeding 1 inch (crib mattresses have a depth of
6 inches or less from edge to edge) on a nominal basis. Such mattresses are typically described as
“crib,” “toddler,” or “youth” mattresses. All adult and youth mattresses are included regardless of
actual size description.
• The scope encompasses all types of “innerspring mattresses,” “non-innerspring mattresses,” and
“hybrid mattresses.” “Innerspring mattresses” contain innersprings, a series of metal springs joined
together in sizes that correspond to the dimensions of mattresses. Mattresses that contain innersprings
are referred to as “innerspring mattresses” or “hybrid mattresses.” “Hybrid mattresses” contain two or
more support systems as the core, such as layers of both memory foam and innerspring units.
• “Non-innerspring mattresses” are those that do not contain any innerspring units. They are generally
produced from foams (e.g., polyurethane, memory (viscoelastic), latex foam, gel-infused viscoelastic
(gel foam), thermobonded polyester, polyethylene) or other resilient filling.
Excluded from the scope of this investigation are “futon” mattresses. A “futon” is a bi-fold frame
made of wood, metal, or plastic material, or any combination thereof, that functions as both seating
furniture (such as a couch, love seat, or sofa) and a bed. A “futon mattress” is a tufted mattress, where
the top covering is secured to the bottom with thread that goes completely through the mattress from
the top through to the bottom, and it does not contain innersprings or foam. A futon mattress is both
the bed and seating surface for the futon.
• Also excluded from the scope are airbeds (including inflatable mattresses) and waterbeds, which
consist of air- or liquid-filled bladders as the core or main support system of the mattress.
• Further, also excluded from the scope of this investigation are any products covered by the existing
antidumping duty order on uncovered innerspring units.
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