Recessed linear lighting: a complete specification guide

By 299 Lighting Technical Team · Published · 7 min read

In short

Recessed linear lighting creates flush lines of light in the ceiling; specify it by length, output, optic, trim type, controls and coordination with the ceiling void.

Recessed linear lighting: a complete specification guide

Recessed linear lighting turns light into architecture. Long, slim profiles sit flush in the ceiling and can run continuously, turn corners and form shapes.

Why designers choose recessed linear

  • Clean ceilings with no hanging elements
  • Lines that reinforce the room's geometry
  • Even, low-glare light for offices and circulation
  • Made-to-measure lengths that finish exactly at walls

What to specify

ItemQuestions to answer
LengthStandard or made to measure? Continuous runs?
OutputLumens per metre to reach your target lux
OpticOpal, microprismatic or asymmetric
Width37 mm slim or 80 mm wide
ColourCCT and CRI
ControlsDALI, Casambi or switched, plus emergency

Ranges to consider

Leck Recessed Trim is a slim 37 mm line with illuminated corners. Lopen Recessed Trim is an 80 mm profile with direct or direct-indirect output and Tunable White.

Planning a recessed scheme?

Send us your reflected ceiling plan. We'll come back with a product shortlist, ceiling cut-out details and lighting calculations.

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Frequently asked questions

What is recessed linear lighting?

Recessed linear lighting uses long, slim profiles installed flush in the ceiling to create continuous lines of light.

Can recessed linear lighting go around corners?

Yes. Leck offers illuminated corners and a wide selection of corner sections.