The Black Vertical Rectangle symbol (▮). Copy and paste it, or use its Unicode, HTML, and CSS codes.
More from Geometric Shapes.
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+25AE (decimal 9646).
Use ▮ in HTML to render ▮ on a web page.
On Windows you can type it with Alt+9646 (hold Alt and enter the number on the numeric keypad).
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