National Gypsum Company

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

• Building Materials & Supplies
• Wallboard & Plasterboard

North American Industry Classification System (NAICS) Categories:

• Home Centers > Plastering & Caulking Materials > Wallboard & Plasterboard
• Other Building Material Dealers

Standard Industry Classification (SIC) Categories:

• Lumber & Other Building Materials > Plastering & Caulking Materials > Wallboard & Plasterboard