4217 Hardware, and Plumbing and Heating Equipment and Supplies Wholesalers

This NAICS Industry Group includes establishments classified in the following NAICS Industries: 42171, Hardware Wholesalers; 42172, Plumbing and Heating Equipment and Supplies (Hydronics) Wholesalers; 42173, Warm Air Heating and Air-Conditioning Equipment and Supplies Wholesalers; and 42174, Refrigeration Equipment and Supplies Wholesalers.