checkbox-indeterminate-line

<svg viewBox="0 0 24 24" fill="currentColor" xmlns="http://www.w3.org/2000/svg"><path d="M4 3H20C20.5523 3 21 3.44772 21 4V20C21 20.5523 20.5523 21 20 21H4C3.44772 21 3 20.5523 3 20V4C3 3.44772 3.44772 3 4 3ZM5 5V19H19V5H5ZM7 11H17V13H7V11Z"/></svg>

<i class="ti ti-checkbox-indeterminate-line"></i>

ti ti-checkbox-indeterminate-line

<i class="ti ti-006003"></i>

ti ti-006003

<svg aria-hidden="true" focusable="false" viewBox="0 0 24 24" fill="currentColor" xmlns="http://www.w3.org/2000/svg"><path d="M4 3H20C20.5523 3 21 3.44772 21 4V20C21 20.5523 20.5523 21 20 21H4C3.44772 21 3 20.5523 3 20V4C3 3.44772 3.44772 3 4 3ZM5 5V19H19V5H5ZM7 11H17V13H7V11Z"/></svg>

<svg aria-hidden="true" focusable="false" viewBox="0 0 24 24" fill="currentColor" xmlns="http://www.w3.org/2000/svg"><path d="M4 3H20C20.5523 3 21 3.44772 21 4V20C21 20.5523 20.5523 21 20 21H4C3.44772 21 3 20.5523 3 20V4C3 3.44772 3.44772 3 4 3ZM5 5V19H19V5H5ZM7 11H17V13H7V11Z"/></svg>

https://cdn.jsdelivr.net/npm/@ticnob/icons@1/icons/checkbox-indeterminate-line.svg