MDL2 Icons
Example of filter at 6x   Example of filter at 5x    Example of filter at 4x    Example of filter at 3x    Example of filter at 2x   Example of filter

mdl2-filter · Unicode: \ue71c · Categories: AppBar glyphs

After you get up and running, you can place MDL2 icons just about anywhere with the <i> tag:

Example of filter mdl2-filter 
<i class="mdl2 mdl2-filter" aria-hidden="true"></i>

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