Pennwell

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

• Plumbing Contractors
• Publishers Magazines & Periodicals

North American Industry Classification System (NAICS) Categories:

• Plumbing, Heating, And Air-Conditioning Contractors > Plumbing Contractors
• Periodical Publishers > Periodicals, Publishing > Publishers Magazines & Periodicals

Standard Industry Classification (SIC) Categories:

• Plumbing, Heating And Air Conditioning > Plumbing Contractors
• Periodicals: Publishing, Or Publishing And Printing > Periodicals, Publishing > Publishers Magazines & Periodicals