Most recent
UL 1821 Ed. 4-2019
Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service - Published Date: November 10, 2025
This new edition of ANSI/CAN/UL 1821 includes Canadian requirements for Combustible Piping for Sprinkler Systems, and requirements for Pipe and Fittings Embedded in Concrete.
- ADD TO ALERT |
- PDF |
Underwriters Laboratories [ul]