Font Awesome
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fa-h-square · Unicode: f0fd · Created: v3.0 · Categories: Medical Icons

After you get up and running, you can place Font Awesome icons just about anywhere with the <i> tag:

Example of h-square fa-h-square 
<i class="fa fa-h-square" aria-hidden="true"></i>

Note: to improve web accessibility, we recommend using aria-hidden="true" to hide icons used purely for decoration.

Looking for more? Check out the examples.