Sheet Metal Workers' Local Union No. 104 spans 49 California counties from the Oregon border to Ventura County. Our membership is made up of over 9,000 highly skilled craftspeople that are trained to perform a wide selection of skills such as the production, fabrication, installation, detailing, and testing and balancing of sheet metal products and HVAC. As a group of craftspeople who stand behind our work with pride, we continue to innovate and raise the standards of our industry to new heights.

SMART 104 Website

Show Your Union Pride

We invite Local 104 members and their families, and other supporters of organized labor, to purchase our Local 104-branded merchandise. When you use or wear Local 104-branded items, you are representing organized labor, so make a good impression! Please be advised that Local 104 carefully protects its name and logos against misuse, including but not limited to wearing or otherwise using Local 104-branded items to falsely represent that a person or business is affiliated with Local 104. Local 104 reserves the right to pursue all available legal remedies to prohibit misuse of its name and logos.