C H I

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

• Doors & Frames Commercial & Industrial

North American Industry Classification System (NAICS) Categories:

• Home Centers > Garage, Door & Window Products > Doors & Door Frames

Standard Industry Classification (SIC) Categories:

• Lumber & Other Building Materials > Garage, Door & Window Products > Doors & Door Frames