What is the part of the pipe that extends beyond the finished wall called?

The part of the pipe that extends beyond the finished wall is known as a stubout. Stubouts are crucial in plumbing systems as they are used to provide access points for future connections to fixtures, such as sinks, toilets, and other plumbing appliances. They serve as an indication of where the plumbing will surface in a wall and allow for proper installation of fixtures later on.

When plumbing work is finished and the wall is completed, stubouts remain visible, ensuring that plumbing can be easily connected without the need to tear into walls. This is particularly important in renovation and construction work, where planning for future connections is key to effective plumbing design. Stubouts are generally capped or plugged until the fixture is installed, maintaining a clean and professional appearance in the finished space.

The other terms listed refer to different aspects of plumbing. Pipe fittings typically refer to connectors or adapters that join sections of pipe, while stub pipes are generally understood to be short pipe lengths that are not necessarily identified as extending beyond a wall. Extension pipes might be used to lengthen existing pipes but do not specifically describe a pipe's relation to a finished wall.