icons/regular/number-4-square.svg

<svg width="24" height="24" viewBox="0 0 24 24" stroke-width="1.5" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M3 20.4V3.6C3 3.26863 3.26863 3 3.6 3H20.4C20.7314 3 21 3.26863 21 3.6V20.4C21 20.7314 20.7314 21 20.4 21H3.6C3.26863 21 3 20.7314 3 20.4Z" stroke="currentColor"/>
<path d="M13.5 16V8L9 13.5H15" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
</svg>