Of wood: — Oriented strand board (OSB)
N355151 · 2025-11-03 — The tariff classification of insulated oriented strand board from Canada
The classification was requested for oriented strand board (OSB) with a layer of insulation. Product information and pictures were submitted for our review. The product under consideration is BTRBoard OSB. This product consists of a 7/16” layer of OSB adhered to a 1 3/16” layer of polyurethane (PU) foam. The PU foam has a thin layer of fiberglass affixed to it for protection during shipping. The OSB is used as sheathing in buildings, with the PU foam acting as insulation. The OSB is used as OSB would typically be used, but with improved insulation properties. The Explanatory Notes to the…
N324696 · 2022-04-04 — The tariff classification of door jamb products from China
The ruling was requested on several door jamb products. Product information and images were submitted for our review. There are six items under consideration. Item 1 is a flat door jamb constructed of finger-jointed, edge-glued pine wood. The wood is shaped with a continuous profile throughout its length. The face is flat, and the back has three half-circle grooves that run the length of the jamb. The face corners are radius-curved. The face is wider than the back and the edges slope diagonally inward between the face and back. The ends of the jambs are continuously shaped with a rabbet (or…
N279029 · 2016-09-30 — The tariff classification and status under the North American Free Trade Agreement (NAFTA) of InsulFloor R3 boards
The request was returned to you for additional information, which was received by this office on September 2, 2016. The ruling request regards InsulFloor R3 boards. A sample and product information were submitted for our review and will be retained for reference. The sample submitted consists of a 1/2”-thick layer of oriented strand board (OSB) laminated onto a 1/2"-thick layer of polystyrene foam that is grooved along its back. The imported boards measure approximately 15.5” wide by 47.5” long. The boards have tongue and groove shaping along their edges and ends for installation. The boards…
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