Plastic Letter Sizes



Over the years, a variety of sizes of black sign letters have been made.  The above image packs in LOTS of information.

  1. There are basically “two” sizes of letters.  There are the 8 inch (7 7/8″ letters and the 16″ letters which are approximately double the size.  The 16″ letters take up twice the height of the 8″ letters while “skipping” the track.) and 10 inch.  (Same as the 8″ letters, but the letters are 10″ and 20.5″.)
  2. When the letter sets are created, there are 3 sizes of coroplast that are needed.
    • The “R” size is used by almost ALL of the letters and most numbers and most symbols.
    • The “I” is used for one letter/number and a couple of symbols.
    • The “M” is used for only the M.  It is our widest letter.
  3. There is also a 4″ and a 5″ letter set on the list.  Those were used for our sidewalk signs and banners.  Unless your our TOTALLY duplicating our business, it probably won’t be of much need to you.
  4. On the image with the letters, the contrast is seen between the size of the letter panel and the actual letter.  (The letter panel is the piece of coroplast the letter is attached to.  The letter is the vinyl letter attached to the coroplast.)
    • On the 20 inch letter [actually 20.5 inches tall], the letter is 18 inches tall.
    • On the 16″ letter, the letter is 14 inches tall.
    • On the 10″ letter, the letter is 9 inches tall.
    • On the 8″ letter [actually 7 7/8 inches tall], the letter is 7 inches tall.

There is more of this detailed stuff to post, but hopefully this gets us a common set of terminology.


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