The Box Drawings Heavy Double Dash Vertical symbol (╏). Copy and paste it, or use its Unicode, HTML, and CSS codes.
More from Box Drawing.
The quickest way is to copy ╏ from this page and paste it anywhere. You can also insert it with its Unicode, HTML, or alt code listed above.
╏ is U+254F (decimal 9551).
Use ╏ in HTML to render ╏ on a web page.
On Windows you can type it with Alt+9551 (hold Alt and enter the number on the numeric keypad).
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