A National Plumbers

A National Plumbers is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Plumbing Repair & Service
• Water Heaters

North American Industry Classification System (NAICS) Categories:

• Plumbing, Heating, And Air-Conditioning Contractors > Plumbing Contractors > Plumbing Repair & Service
• Hardware Stores > Plumbing & Heating Supplies Retail > Water Heaters

Standard Industry Classification (SIC) Categories:

• Plumbing, Heating And Air Conditioning > Plumbing Contractors > Plumbing Repair & Service
• Hardware Stores > Hardware Stores, Nec > Water Heaters