RemixIconEx.System.logout_box_r

You're seeing just the function logout_box_r, go back to RemixIconEx.System module for more information.
Link to this function

logout_box_r(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.System.logout_box_r()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M5 22a1 1 0 0 1-1-1V3a1 1 0 0 1 1-1h14a1 1 0 0 1 1 1v3h-2V4H6v16h12v-2h2v3a1 1 0 0 1-1 1H5zm13-6v-3h-7v-2h7V8l5 4-5 4z" />
</svg>

example usage

svg.icon {
  width: 96;
  height: 96;
}