NAICS 423330: Vendors that win government contracts in this category are primarily engaged in the merchant wholesale distribution of nonwood roofing and nonwood siding and insulation materials.

Examples:

  • Asphalt Roofing Shingles Merchant Wholesalers
  • Gutters And Down Spouts (except Wood) Merchant Wholesalers
  • Insulation Materials (except Wood) Merchant Wholesalers
  • Roofing Materials (except Wood) Merchant Wholesalers
  • Sheet Metal Roofing Materials Merchant Wholesalers
  • Shingles (except Wood) Merchant Wholesalers

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