Northern Duct

Northern Duct is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Duct Cleaning Heating Air Conditioning Etc

North American Industry Classification System (NAICS) Categories:

• Other Services To Buildings And Dwellings > Equipment Cleaning Services > Air Duct Cleaning

Standard Industry Classification (SIC) Categories:

• Building Cleaning & Maintenance Services, Nec > Equipment Cleaning Services > Air Duct Cleaning