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 skilledcraftspeoplewhoare 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.