Recessed light

"Pot light" redirects here. For lights used for growing marijuana, see Grow light.

A recessed light or downlight (also pot light in Canadian English, sometimes can light (for canister light) in American English) is a light fixture that is installed into a hollow opening in a ceiling. When installed it appears to have light shining from a hole in the ceiling, concentrating the light in a downward direction as a broad floodlight or narrow spotlight. Most recessed fixtures are cylindrical and fit into a circular hole in the ceiling.

There are three parts to a traditional recessed lighting fixture: housing, trim and bulb. The trim is the visible portion of the light. It is the insert that is seen when looking up into the fixture, and also includes the thin lining around the edge of the light. The housing is the fixture itself that is installed inside the ceiling and contains the lamp holder. There are many different types of bulbs that can be inserted into recessed lighting fixtures, with the amount of heat generated by the bulb being an important consideration.

Canless recessed lights, also known as "wafer lights" are thin one-piece assemblies with a built-in LED light source. These are inserted into a hole in the ceiling like traditional recessed lighting, but do not require as much space above the ceiling.

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