National Envelope

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

• Envelopes
• Office Equipment & Supplies Retail

North American Industry Classification System (NAICS) Categories:

• Office Supplies And Stationery Stores > Office & School Supplies > Envelopes

Standard Industry Classification (SIC) Categories:

• Stationery Stores > Office & School Supplies > Envelopes
• Stationery Stores > Bookbinders & Covers > Office Equipment & Supplies