UL 441 PDF Download
$538.00Gas Vents
standard by Underwriters Laboratories, 04/08/2016
Underwriters Laboratories
Underwriters Laboratories Inc. is chartered to establish, maintain, and operate laboratories for the examination and testing of devices, systems and materials to determine their relation to hazards to life and property, and to ascertain, define and publish standards, classifications and specification for materials, devices, products, equipment, constructions, methods, and systems affecting such hazards.
Pumps for Fire Protection Service
standard by Underwriters Laboratories, 12/23/2008
Pumps for Fire Protection Service
standard by Underwriters Laboratories, 12/23/2008
Pumps for Fire Protection Service
standard by Underwriters Laboratories, 02/02/2009
Antenna-Discharge Units
standard by Underwriters Laboratories, 11/02/2006
Power Converters/Inverters and Power Converter/Inverter Systems for Land Vehicles and Marine Crafts
standard by Underwriters Laboratories, 09/02/2015
Heat Reclaimers for Gas-, Oil-, or Solid Fuel-Fired Appliances
standard by Underwriters Laboratories, 12/13/2010
Audible Signaling Devices for Fire Alarm and Signaling Systems, Including Accessories
standard by Underwriters Laboratories, 01/28/2016
Audible Signal Appliances for General Signaling Use
standard by Underwriters Laboratories, 02/03/2016
Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures
standard by Underwriters Laboratories, 10/24/2016
Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures for Use with Photovoltaic (PV) Systems
standard by Underwriters Laboratories, 03/07/2016
Thermoplastic-Insulated Underground Feeder and Branch-Circuit Cables
standard by Underwriters Laboratories, 01/01/2008
Power-Operated Dispensing Devices for LP-Gas
standard by Underwriters Laboratories, 04/07/2016
Edison-Base Lampholders
standard by Underwriters Laboratories, 09/05/2017
Protectors for Paired Conductor Communication Circuits
standard by Underwriters Laboratories, 01/01/2001
Secondary Protectors for Communications Circuits
standard by Underwriters Laboratories, 01/01/2001
Protectors for Data Communications and Fire Alarm Circuits
standard by Underwriters Laboratories, 06/14/2004
Protectors for Data Communications and Fire Alarm Circuits
standard by Underwriters Laboratories, 02/09/1999
Protectors for Coaxial Communications Circuits
standard by Underwriters Laboratories, 08/03/2001
Attachment Plugs and Receptacles
standard by Underwriters Laboratories, 03/30/2012