National Excelsior

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

• Heating Equipment & Systems Parts & Supplies

North American Industry Classification System (NAICS) Categories:

• Household Appliance Stores > Air Conditioning & Heating Systems

Standard Industry Classification (SIC) Categories:

• Household Appliance Stores > Air Conditioning & Heating Systems