# NAICS 423330: Roofing, Siding, and Insulation Material Merchant Wholesalers

The SBA size standard for NAICS 423330 is 225 employees (13 CFR 121.201).

| Field | Value |
| --- | --- |
| Code | 423330 |
| Title | Roofing, Siding, and Insulation Material Merchant Wholesalers |
| Level | 6 |
| Parent | 42333 |
| Size standard | 225 employees |
| Footnote | - |

## Description

This industry comprises establishments primarily engaged in the merchant wholesale distribution of nonwood roofing and nonwood siding and insulation materials.

## 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/423330/size-standard?revenue_usd=...
- MCP tools: naics_lookup, size_standard_check

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