National Gypsum Company

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

• Building Materials & Supplies
• Gypsum & Gypsum Products

North American Industry Classification System (NAICS) Categories:

• Other Building Material Dealers
• All Other Miscellaneous Store Retailers (Except Tobacco Stores)

Standard Industry Classification (SIC) Categories:

• Lumber & Other Building Materials
• Miscellaneous Retail Stores, Nec