A vertical framing member that is shorter than a full-length stud and is used to support a header or sill. These structural components are typically found above or below window and door openings, transferring loads to the foundation or supporting structure. For example, in wall construction, these members run from the header down to the top plate or from the sill up to the sole plate, providing necessary support for the opening.
The use of these framing elements is crucial for maintaining the structural integrity of a wall. They redistribute weight around openings, preventing sagging and ensuring that loads are properly transferred. Historically, these elements have been a standard practice in framing, evolving from simpler timber constructions to the more standardized lumber sizes used today, consistently ensuring durable and safe building practices.