The merchandise concerned is described by you as the “office furniture phone booth.” You indicate that the phone booth is formed by wood panels covered in fabric, joined by aluminum extrusions, and has a glass door. The phone booth has a handle for the opening and closing of the glass door. Photographs appear to confirm that the phone booth is constructed of a metal-type framework, of which the two side panels and one back panel are covered in fabric. Photographs also indicate that the phone booth has no telecommunication equipment, nor does the phone booth appear to be adapted for installation of such equipment. Overseas shipment of this product will be in knockdown, unassembled condition.
[1] Please importantly note that only the relevant portion of the related is displayed above. You may refer to the said customs ruling for the entire ruling explanation.
[1]. https://rulings.cbp.gov/ruling/N296271