NAICS UNIVERSITY · Free research for insurance agents
Metal Window and Door Manufacturing
NAICS 332321 · United States · 2022 edition
This U.S. industry comprises establishments primarily engaged in manufacturing metal framed windows (i.e., typically using purchased glass) and metal doors. Examples of products made by these establishments are metal door frames; metal framed window and door screens; and metal molding and trim (except automotive).
Activities described by this code
Other activities to examine
- Manufacturing wood or metal covered (i.e., clad) wood framed windows and doors: 321911 — Wood Window and Door Manufacturing;
- Manufacturing metal automotive molding and trim: 336370 — Motor Vehicle Metal Stamping
Census classification reference
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Compare another operationInsurance operations research — draft
Metal window and door manufacturers fabricate frames, screens, doors, and trim primarily from aluminum, steel, or other metals, typically using purchased glass and hardware components. Operations generally involve cutting, welding, bending, and finishing metal stock, followed by assembly and quality inspection. Products are typically sold to distributors, contractors, or directly to commercial construction projects.
Questions to investigate
- What types of products are manufactured — standard residential windows and doors, commercial framing systems, or specialty products such as blast-resistant or hurricane-rated units?
- What is the primary distribution channel — direct to contractors, through distributors, or to large commercial construction projects?
- Are any on-site finishing operations performed, such as powder coating, anodizing, or chemical surface treatment?
- What is the total insurable value of manufacturing equipment, and how dependent is production on key pieces of equipment?
This insurance research was generated in April 2026. It has not received a complete human review. The October 12, 2026 audit checked codes and titles only, not descriptions or coverage assertions.