NAICS Code 423310

NAICS 423310

NAICS Code 423310 – Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers

Definition of NAICS Code 423310: This industry comprises establishments primarily engaged in the merchant wholesale distribution of lumber; plywood; reconstituted wood fiber products; wood fencing; doors and windows and their frames (all materials); wood roofing and siding; and/or other wood or metal millwork.

  • You can also download your own copy of the complete 2017 NAICS Classification Manual. The NAICS Manual is updated every five years. The 2017 copy will be applicable until a new edition is produced in 2022.

Cross Reference Guide for Code 423310

What codes are similar to this classification that might be a more applicable code? The cross-reference guide below displays the codes for other similar industries. Please review to find the most applicable classification.

  • Merchant wholesale distribution of nonwood roofing and siding materials–are classified in Industry NAICS 423330, Roofing, Siding, and Insulation Material Merchant Wholesalers; and
  • Merchant wholesale distribution of timber and timber products, such as railroad ties, logs, firewood, and pulpwood–are classified in Industry NAICS 423990, Other Miscellaneous Durable Goods Merchant Wholesalers.

Other Index Entries for NAICS 423310

The North American Industry Classification System contains multiple index entries that are each descriptive of the same code. The bulleted list below shows all applicable index entries (Current and former) that are associated with this classification. These index entries further elaborate on the scope of applicable industries that have already been defined at the top of this page.

  • Building board (e.g., fiber, flake, particle) merchant wholesalers
  • Buildings, prefabricated wood, merchant wholesalers
  • Cabinets, kitchen, built in, merchant wholesalers
  • Doors and door frames merchant wholesalers
  • Fencing, wood, merchant wholesalers
  • Fiberboard merchant wholesalers
  • Flooring, wood, merchant wholesalers
  • Kitchen cabinets, built in, merchant wholesalers
  • Lumber (e.g., dressed, finished, rough) merchant wholesalers
  • Millwork merchant wholesalers
  • Molding (e.g., sheet metal, wood) merchant wholesalers
  • Paneling merchant wholesalers
  • Particleboard merchant wholesalers
  • Plywood merchant wholesalers
  • Prefabricated buildings, wood, merchant wholesalers
  • Roofing materials, wood, merchant wholesalers
  • Screens, window and door, merchant wholesalers
  • Shingles, wood, merchant wholesalers
  • Siding, wood, merchant wholesalers
  • Structural assemblies, prefabricated wood, merchant wholesalers
  • Wallboard merchant wholesalers
  • Windows and window frames merchant wholesalers
  • Wood fencing merchant wholesalers
  • Wood flooring merchant wholesalers
  • Wood shingles merchant wholesalers
  • Wood siding merchant wholesalers

Suggested Insurance Conversion Table for NAICS Code 423310

Looking for an insurance classification other than the North American Industry Classification System? If a company falls within the industry defined on this page, then the class codes mentioned below may be applicable. Please note that the bulleted cross-reference guide below is not authoritative. Users should have an insurance professional review to ensure proper insurance classification.

  • NCCI WC (Varies by state): 2960, 8232, 8235, 8058NAICS 423310
  • CA WC: 2710, 8232, 8017
  • DE WC: 855, 935
  • PA WC: 855, 935
  • MI WC: 8232, 8235, 8058
  • NJ WC: 2960, 8232, 8235
  • NY WC: 8232, 8235
  • WY WC: 423310
  • GL: 59738, 45819, 10255, 45819
  • SIC: 5039, 5031

Resources: Praxiom, AceGroupTDICalifornia Division of Workers Compensation, Delaware Workers Compensation Manual, Pennsylvania Workers Compensation Manual, Michigan Workers’ Compensation Placement Facility: Classification Definitions, New Jersey Workers Compensation and Employers Liability Insurance Manual, New York Workers Compensation and Employers Liability, North American Industry Classification System, Florida Underwriting Guide: Commercial General Liability Classifications,  Standard Industrial Classifications.

The suggested cross reference guide for NAICS code 423310 is based on our research using the resources cited above.

Correlating Code Breakdown for North American Industry Classification System

NAICS codes are broken down by digit. The broadest description starts with the 2 digit sector codes. The 3 digit subsector codes are more specific, then the 4 digit industry group, 5 digit industry, and the most specific is the 6 digit NAICS code (Where you are now). If the code on this page does not describe the industry of the business in question, then select the largest applicable code below. From there, follow through the progression of smaller digits to the larger digits in order to obtain the most specific 6 digit classification.

  • Sector 42: Wholesale Trade
  • Subsector 423: Merchant Wholesalers, Durable Goods
  • Industry Group 4233: Lumber and Other Construction Materials Merchant Wholesalers
  • Industry 42331: Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers
  • 6 Digit Code(s) NAICS 423310: Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers
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NAICS Code 423310