TDS PDF

Component Connectors for Use in Data, Signal, Control and Power Applications (Edition 3, published January 7, 2016; revisions through November 17, 2020). Original standard UL 1977 2020-11 in PDF full version. Additional info + preview on request

Document status: Replaced by St UL 1977 2022-12

Grease Ducts (Edition 4, published December 13, 2010; revisions through April 28, 2017; ANSI reaffirmation 2017). Original standard UL 1978 2017-04 in PDF full version. Additional info + preview on request

Document status: Replaced by St UL 1978 2024-04

Grease Ducts (Edition 4, published December 13, 2010; revisions through October 11, 2021; ANSI reaffirmation 2021). Original standard UL 1978 2021-10 in PDF full version. Additional info + preview on request

Document status: Replaced by St UL 1978 2024-04

Central-Station Automation Systems (Edition 3, published October 29, 2014; revisions through November 6, 2019). Original standard UL 1981 2019-11 in PDF full version. Additional info + preview on request

Document status: Replaced by

Automatic Sprinklers for Fire-Protection Service (Edition 13, February 25, 2022). Original standard UL 199 2022-02 in PDF full version. Additional info + preview on request

Document status: Replaced by St UL 199 2025-06

Nonmetallic Underground Conduit with Conductors (Edition 3, published November 22, 2013; revisions through January 20, 2017). Original standard UL 1990 2017-01 in PDF full version. Additional info + preview on request

Document status: Replaced by