# NAICS 333413: Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing

The SBA size standard for NAICS 333413 is 500 employees (13 CFR 121.201).

| Field | Value |
| --- | --- |
| Code | 333413 |
| Title | Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing |
| Level | 6 |
| Parent | 33341 |
| Size standard | 500 employees |
| Footnote | - |

## Description

This U.S. industry comprises establishments primarily engaged in (1) manufacturing stationary air purification equipment, such as industrial dust and fume collection equipment, electrostatic precipitation equipment, warm air furnace filters, air washers, and other dust collection equipment, and/or (2) manufacturing attic fans and industrial and commercial fans and blowers, such as commercial exhaust fans and commercial ventilating fans.

## Sources

- Census NAICS: https://www.census.gov/naics/
- SBA size standards: https://www.sba.gov/document/support-table-size-standards

## API and MCP

- REST: GET https://samgovapi.io/api/v1/naics/333413/size-standard?revenue_usd=...
- MCP tools: naics_lookup, size_standard_check

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