CAL20 Plaster-In LED Profile

Creating a truly flush, invisible light source elevates any architectural interior. The CAL20 plaster-in LED profile is designed specifically for those who demand a flawless, trimless finish across walls and ceilings.

By embedding the aluminium channel directly into the plasterboard before skimming, you eliminate visible edges, leaving nothing behind but a pure band of illumination. This approach conceals the robust thermal management system required for high-powered LED tape and ensures the luminaire becomes an integral part of the building's fabric.

At MarcLED, our rigid plaster-in extrusions are engineered to deliver our signature Clean Light effect, providing a continuous, glare-free wash that transforms corridors, living spaces, and commercial foyers. The CAL20 system offers a highly capable foundation for main ambient lighting, removing visual clutter so your architecture takes centre stage.

Integrating the CAL20 plaster-in LED profile into modern architecture

The CAL20 plaster-in LED profile is engineered as a strictly rigid, non-bendable fitting, providing a dead-straight channel for embedding directly into plasterboard. Designed for trimless mounting, the extrusion features perforated flanges that are plastered over during the skimming process. This mud-in technique effectively hides the aluminium structure entirely within the ceiling or wall cavity, leaving only the glowing diffuser exposed. The resulting flat and uninterrupted aesthetic makes it an ideal choice for primary mains lighting in high-end residential, gallery, and corporate environments.

Because the fitting sits fully recessed, its internal geometry acts as a substantial heat sink to manage the output of the LED ribbon. The profile actively draws warmth away from the diodes, significantly prolonging the lifespan and performance of your chosen LED flex. This thermal management is crucial for primary light sources expected to run consistently throughout the day.

Advanced surface protection and thermal performance

Each CAL20 extrusion is finished in a high-grade silver matt anodised coating. This specialised surface treatment protects the aluminium from oxidation and minor abrasions during installation, while also optimising the fitting's thermal conductivity. The matt finish prevents unsightly fingerprints and marks during site handling, ensuring the interior channel remains pristine before the LED strip is applied. This guarantees that light reflects evenly within the housing, contributing to a flawless output.

Unbroken lines across expansive environments

The CAL20 system caters to both compact installations and extensive architectural runs. We supply this profile in standard 1.0 metre, 2.0 metre, and 3.0 metre sections. For substantial commercial spaces or sweeping continuous lines, we also offer extended continuous roll options spanning 10.0 metres and 20.0 metres. These exceptional lengths dramatically reduce the number of joins required, eliminating light leaks and ensuring an impeccably smooth gradient of illumination.

To complete the installation, a selection of snap-in diffusers and covers shield the diodes and eliminate harsh spotting. Every component in this system is fully UKCA and CE compliant, providing ultimate peace of mind regarding safety and electrical standards. By marrying these sophisticated extrusions with high-quality LED flex, you create a permanent architectural lighting feature that redefines the atmosphere of the room.