_:nbf6bba0100ca4a00bd8897882a0c6491xb5
<http://schema.org/valueRequired>
"true"^^<http://www.w3.org/2001/XMLSchema#boolean>
<https://xkcurtainwall.com/kawneer-installation-instructions/attachment/482-987-horiz-slg-bld-ir501t-install/>