The sides of the window glass travel in components called?

The correct answer highlights the specific components that are involved in the operation and structure of window glass in vehicles. The term "run channel" refers to the tracks or channels that guide the movement of the window glass. These channels play a crucial role in ensuring that the glass can smoothly rise and fall within the window frame.

Run channels are typically made of durable materials that can withstand the wear and tear of regular use, which helps to prevent misalignment and ensures that the glass remains securely in place. This is essential for both the functionality of the window and the overall safety of the vehicle, as it helps to reduce noise, prevent leaks, and enhance the sealing of the vehicle’s interior.

Understanding the role of run channels is important for an appraiser, as damage to these components can affect the window's operation and overall integrity of the vehicle's design. In contrast, the other options refer to different parts or mechanisms that may not specifically relate to the guiding of the window glass. For instance, window regulators are responsible for the actual mechanical operation that raises and lowers the window, while edge guards are pieces that protect the edges of the glass and sash channels refer to the frames holding the glass but do not relate specifically to guiding the glass itself.