C3L Plaster-in LED Profile

The C3L Plaster-in LED profile is specifically engineered for trimless integration within drywall and plasterboards, delivering bold, main illumination directly from indoor ceilings and walls.

By sitting completely flush with the surface, this rigid aluminium channel leaves only a crisp, glowing line of light, stripping away all visible framing.

At MarcLED, our Clean Light philosophy ensures that every component meets rigorous functional and visual standards. The C3L system transforms flat surfaces into dynamic architectural features, offering a permanent, high-performance lighting solution.

C3L extra end cap for LED profile

£1.80

Shaping interior architecture with the C3L Plaster-in LED Profile

The C3L profile forms a rigid, non-bendable track that guarantees flawlessly straight light lines across broad spans. Supplied in raw aluminium, the extrusion presents an ideal, textured surface for skimming and plastering. Because the framework is completely concealed behind the final plaster layer, anodised coatings are unnecessary. The metal simply bonds securely with the building materials while acting as a highly efficient thermal bridge. This robust heat dissipation cools the powerful mains-driven LED strips, preventing premature lumen degradation and ensuring the light remains vibrant year after year.

Uninterrupted radiance across residential and commercial spaces

To minimise visible seams and accommodate diverse project scales, the C3L extrusion is available in standard lengths of 1000mm, 2000mm, and 3000mm. For large-scale architectural designs demanding continuous illumination, we also supply comprehensive 20000mm packages, significantly reducing complex on-site jointing. A dedicated sample size is available to assist with site planning and evaluating skim depth before committing to a full installation.

Refining the atmospheric output

To achieve a signature glare-free glow, the profile pairs with a selection of dedicated diffusers. These optical shields clip securely into the channel, softening the LEDs into a uniform band of light while protecting the electronics from indoor dust. Matching end caps seal the system, preventing light leaks at the extremities and ensuring the channel is fully enclosed before plastering begins. Every component within the C3L ecosystem adheres to strict UKCA and CE compliance, guaranteeing electrical safety and long-term reliability.