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OUTLINE OF INVESTIGATION FOR POLYTETRAFLUOROETHYLENE PLASTIC SEAL MATERIALS (Issue 6; published 2013-01-17). Original standard UL 1321 2013-01 in PDF full version. Additional info + preview on request

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Fabricated Scaffold Planks and Stages (Edition 6, published March 31, 2010; revisions through August 11, 2017). Original standard UL 1322 2017-08 in PDF full version. Additional info + preview on request

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Fabricated Scaffold Planks and Stages (Edition 6, published March 31, 2010; revisions through January 6, 2023; ANSI reaffirmation 2023). Original standard UL 1322 2023-01 in PDF full version. Additional info + preview on request

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Scaffold Hoists (Edition 4, published April 5, 2007; revisions through December 8, 2020). Original standard UL 1323 2020-12 in PDF full version. Additional info + preview on request

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Scaffold Hoists (Edition 4, published April 5, 2007; revisions through January 4, 2023). Original standard UL 1323 2023-01 in PDF full version. Additional info + preview on request

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Scaffold Hoists (Edition 4, published April 5, 2007; revisions through September 10, 2025). Original standard UL 1323 2025-09 in PDF full version. Additional info + preview on request

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