12 Gauge Strut Channel P3300 (solid) channel is our 12 gauge channel that is commonly used for trapeze supports, seismic bracing, ceiling grids, pipe, conduit, duct and cable tray supports, racks, and other general framing. For application examples, refer to our Application Showcase. This profile is used mainly for electrical applications because of its low profile and lower load carrying capacity. Often, a deeper profile overshoots the load capacity needs of the project.