Harbor Plumbing Supply is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Plumbing & Heating Supplies Wholesale & Manufacturers
• Plumbing Drain Services

North American Industry Classification System (NAICS) Categories:

• Plumbing, Heating, And Air-Conditioning Contractors > Plumbing Contractors > Plumbing Contractors Drains & Sewer Cleaning
• Plumbing Fixture Fitting And Trim Manufacturing
• Plumbing And Heating Equipment And Supplies (Hydronics) Merchant Wholesalers

Standard Industry Classification (SIC) Categories:

• Plumbing, Heating And Air Conditioning > Plumbing Contractors > Plumbing Drain Services
• Plumbing Fixture Fittings & Trim
• Plumbing And Heating Equipment And Supplies (Hydronics)