For those requiring an offline, printable copy for technical documentation, you can purchase the official PDF from the UL Standards Sales Site or the ANSI Webstore .
Puedes visualizar una versión de revisión de la norma ANSI/CAN/UL 144:2021 en este Repositorio de Estándares . ul 144 pdf gratis
Like most industry standards, UL 144 is a copyrighted document. This means that distributing the PDF for free on third-party websites is generally a violation of copyright law. For those requiring an offline, printable copy for