End caps close the open ends of a linear lighting extrusion, helping contain light within the channel and reduce light escaping from the ends. They are shaped to fit the corresponding extrusion, creating a finished appearance for tape light installations.

Surface-mount profiles attach to the visible surface, recessed profiles sit within a prepared opening, and corner-mount profiles position the light at an angle where two surfaces meet. In-wall profiles install into drywall or another substrate, often with a mud-in flange, to create a more integrated line of light.

Match the end cap to the extrusion’s profile and mounting style, such as angled, flanged, rectangular, or in-wall, because each cap is shaped to fit its corresponding channel. Then confirm that the cap supports the extrusion and tape light dimensions, including the channel width and the tape light’s 10- to 12-millimeter width where specified, and choose an open or closed end cap based on the installation.

Consider the mounting method, available space, tape light width, extrusion profile, lens diffusion, and whether the channel can be field cut to fit the installation. Use aluminum extrusion to support heat management, position the tape light as directed to help reduce visible spotting, and select end caps shaped for the corresponding extrusion to limit light leakage and create a finished appearance.