fontawesome6/asset/fontawesome/svgs/thin/window-maximize.svg

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><!--! Font Awesome Pro 6.4.2 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license (Commercial License) Copyright 2023 Fonticons, Inc. --><path d="M64 51.2C39.3 51.2 19.2 71.3 19.2 96v80H492.8V96c0-24.7-20.1-44.8-44.8-44.8H64zM19.2 192V416c0 24.7 20.1 44.8 44.8 44.8H448c24.7 0 44.8-20.1 44.8-44.8V192H19.2zM0 96C0 60.7 28.7 32 64 32H448c35.3 0 64 28.7 64 64V416c0 35.3-28.7 64-64 64H64c-35.3 0-64-28.7-64-64V96z"/></svg>