NAICS 423390 - Other Construction Material Merchant Wholesalers
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What is NAICS 423390
NAICS code 423390 covers establishments primarily engaged in the merchant wholesale distribution of specialized construction materials and manufactured structures. This includes companies that distribute manufactured homes, prefabricated buildings (excluding wood-based products), and a variety of construction materials other than common items like lumber, roofing, or electrical supplies. Businesses in this sector serve as critical intermediaries, sourcing and supplying niche construction products to contractors, builders, and government agencies. The scope of this industry reflects the complexity and diversity of modern construction projects, where specialized materials and modular building components are increasingly in demand. Government agencies contract with these wholesalers to efficiently procure specialized construction components that support infrastructure, housing, and facility development projects. These contracts enable government entities to access quality materials at scale and ensure timely project completion.
Industry Classification for NAICS 423390
This industry comprises (1) establishments primarily engaged in the merchant wholesale distribution of manufactured homes (i.e., mobile homes) and/or prefabricated buildings and (2) establishments primarily engaged in the merchant wholesale distribution of construction materials (except lumber, plywood, millwork, wood panels, brick, stone, roofing, siding, electrical and wiring supplies, and insulation materials).
Illustrative Examples:
- Flat glass merchant wholesalers
- Prefabricated buildings (except wood) merchant wholesalers
- Ornamental ironwork merchant wholesalers
- Fencing and fencing accessories (except wood) merchant wholesalers
- Plate glass merchant wholesalers
- Storage bins merchant wholesalers
Breakdown for NAICS 423390
- Includes merchant wholesalers of manufactured homes and prefabricated non-wood buildings.
- Excludes wholesalers of lumber, plywood, roofing, electrical supplies, and insulation.
- Focuses on distribution of specialized construction materials beyond common building products.
- Businesses serve contractors, builders, and government agencies requiring niche construction components.
- Typical project types include public housing, military facilities, and infrastructure development.
- Size standards vary but often include small to mid-sized wholesalers with specialized product lines.
Included Activities for NAICS 423390
- Wholesale distribution of manufactured homes and mobile homes.
- Merchant wholesale of prefabricated buildings excluding wood-based structures.
- Supplying flat glass, plate glass, and ornamental ironwork to construction projects.
- Distribution of fencing and fencing accessories made from non-wood materials.
- Providing storage bins and other specialized construction-related materials.
- Coordinating logistics and delivery of construction materials to government sites.
- Managing inventory and supplier relationships for niche construction products.
- Supporting government procurement compliance and quality assurance processes.
Business Types for NAICS 423390
- Merchant wholesalers of manufactured and modular homes.
- Distributors of prefabricated non-wood building components.
- Suppliers of specialty glass and ironwork for construction.
- Fencing materials wholesalers excluding wood products.
- Construction materials distributors serving public sector clients.
- Logistics and supply chain firms specializing in construction goods.
Subcategories for NAICS 423390
- Architectural metalwork merchant wholesalers
- Awnings (except canvas) merchant wholesalers
- Bailey bridges merchant wholesalers
- Bins, storage, merchant wholesalers
- Building materials, fiberglass (except insulation, roofing, siding), merchant wholesalers
- Building paper merchant wholesalers
- Buildings, prefabricated nonwood, merchant wholesalers
- Ceiling tile merchant wholesalers
- Countertops (except wood, wood fiber, stone, concrete) merchant wholesalers
- Culvert pipe, metal and plastics, merchant wholesalers
- Fencing and fencing accessories (except wood) merchant wholesalers
- Fiberglass building materials (except insulation, roofing, siding) merchant wholesalers
- Flat glass merchant wholesalers
- Gate and fence hardware merchant wholesalers
- Glass, block and brick, merchant wholesalers
- Glass, plate, merchant wholesalers
- Gypsum building products merchant wholesalers
- Iron and steel architectural shapes merchant wholesalers
- Manufactured (i.e., mobile) homes merchant wholesalers
- Mastics, construction, merchant wholesalers
- Metal buildings merchant wholesalers
- Ornamental ironwork merchant wholesalers
- Paper, building, merchant wholesalers
- Plate glass merchant wholesalers
- Prefabricated buildings (except wood) merchant wholesalers
- Septic tanks (except concrete) merchant wholesalers
- Silt fence and other fabrics (e.g., for erosion control) merchant wholesalers
- Storage bins merchant wholesalers
- Structural assemblies, prefabricated (except wood), merchant wholesalers
Government Buyers for NAICS 423390
Government agencies such as the Department of Housing and Urban Development, the General Services Administration, the Department of Defense, and various state and local public works departments frequently purchase goods under NAICS 423390. These agencies require specialized construction materials and prefabricated building components to support public housing initiatives, military base construction, emergency response facilities, and infrastructure maintenance. The need for modular and prefabricated buildings is particularly high in disaster recovery and rapid deployment scenarios. Procuring from established merchant wholesalers ensures government projects benefit from reliable supply chains, competitive pricing, and compliance with regulatory standards.
Contract Types & Procurement for NAICS 423390
Contracts in this sector typically include firm-fixed-price and indefinite delivery/indefinite quantity (IDIQ) agreements, allowing for flexibility in ordering quantities and delivery timelines. Procurement methods often involve competitive bidding, requests for quotations (RFQs), and government-wide acquisition contracts (GWACs). Contract values vary widely, ranging from small-scale orders for specific construction materials to multi-million-dollar contracts for bulk purchases of prefabricated buildings or mobile homes. Blanket purchase agreements (BPAs) are also common for recurring supply needs, enabling streamlined acquisition processes. Contractors must demonstrate compliance with federal acquisition regulations and quality assurance standards.
Details for NAICS 423390
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