Parallel Flange Channels (PFC), commonly known as C-channels, feature consistent flange thicknesses from web to end, facilitating easier connections and compatibility with standard washers.

In contrast, Tapered Flange Channels have flanges that decrease in thickness towards the ends, offering efficient load distribution and weight savings. Both types are widely used in construction, manufacturing, and transportation, with PFCs often preferred for their uniformity and ease of use, while tapered channels are selected for applications requiring varying load-bearing capacities along their length.