2022 NAICS industry group in sector 42 Wholesale Trade
4237 Hardware, and Plumbing and Heating Equipment and Supplies Merchant Wholesalers
NAICS 4237 is the US industry code for hardware, and plumbing and heating equipment and supplies merchant wholesalers. It covers establishments primarily engaged in the merchant wholesale distribution of hardware; plumbing and heating equipment and supplies (hydronics); warm air heating and air-conditioning equipment and supplies; and refrigeration equipment and supplies.
Official definition
This industry group comprises establishments primarily engaged in the merchant wholesale distribution of hardware; plumbing and heating equipment and supplies (hydronics); warm air heating and air-conditioning equipment and supplies; and refrigeration equipment and supplies.
Codes in 4237
Data last changed November 14, 2026. How this page is built.