321911

Analysis

NAICS 321911 is the 2022 national industry for wood window and door manufacturing, part of 32191 (Millwork). Census lists 18 example activities under it in the official index.

County Business Patterns counts 1,080 US establishments in this code in 2023, employing 60,645 people at an average annual payroll of $61,162 per employee (35th percentile of national industries). 29% of the establishments have fewer than five employees, which is close to the national mix.

Its index entries, the activities Census uses to assign businesses to this code, include door frames and sash, wood and covered wood, manufacturing, door jambs, wood, manufacturing, door units, prehung, wood and covered wood, manufacturing and doors, combination screen-storm, wood, manufacturing, among 18 in all.

Its goods appear in 8 statistical lines of the US tariff schedule, mostly under headings 4418 (builders' joinery and carpentry of wood, including cellular…). That link is how import data is matched to domestic producers, for example in trade-remedy cases.

For example, fabricating wood windows or wood doors at the construction site are classified in 238350 (Finish Carpentry Contractors) instead.

Census lists 1 related activities that belong elsewhere, most often in 238350. Businesses that do several things are classified by their primary activity, the one that generates the most value, so check those boundaries before settling on this code.