SIC Code 3993-04 - Letters-Sign (Manufacturing)

Marketing Level - SIC 6-Digit

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SIC Code 3993-04 Description (6-Digit)

The Letters-Sign (Manufacturing) industry involves the production of individual letters and symbols used for signage and advertising purposes. These letters and symbols can be made from a variety of materials such as metal, plastic, wood, and foam. The industry also includes the manufacturing of illuminated signs, channel letters, and dimensional logos. Companies in this industry may specialize in creating custom designs or producing standardized products for mass distribution.

Hierarchy Navigation for SIC 6-Digit Code 3993-04

Parent Code (less specific)


  • CNC routers
  • Laser cutters
  • Vinyl cutters
  • Welders
  • Saws (band saws, table saws, etc.)
  • Drill presses
  • Sandblasters
  • Paint sprayers
  • Heat benders
  • Letter brakes

Industry Examples of Letters-Sign (Manufacturing)

  • Channel letters
  • Dimensional logos
  • Illuminated signs
  • Metal letters
  • Plastic letters
  • Wood letters
  • Foam letters
  • Vinyl lettering
  • LED signs
  • Neon signs

SIC Code 3993-04 - Letters-Sign (Manufacturing)

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