Aluminium profile for setting up linear lighting C-3-21
Recessed profile C-3-21 for linear lighting
C-3-21 is a profile for creating light lines in plasterboard ceilings and walls. The profile geometry and diffuser quality ensure even illumination.
The C-3-21 profile is designed for integration into the plasterboard surface and is mechanically fixed. It creates a clean linear light opening with an optimal width of 21 mm. This solution is suitable for residential and commercial projects. The profile is an excellent choice when you need high-quality, understated linear lighting for modern interiors.
Technical library for architects:
- 📑 View catalogue (PDF)
- 📐 Download technical drawings (DWG)
- 🧊 Download 3D models
- 🧪 Order samples — this will help you select the ideal solutions for your clients in person in future projects.
🇬🇧 Notice for customers in the United Kingdom
Payment and taxes: Our website automatically identifies your region and does not charge VAT (VAT 0%) at checkout. You can choose any payment method — the price will remain tax-free. Please note that UK import VAT is still collected by the courier upon delivery.
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Reference: official information on gov.uk.
Key advantages of C-3-21
- Profile for linear lighting in plasterboard: designed for installation flush with ceilings and walls, creating stable light recess geometry with a width of 21 mm.
- Complete solution: the diffuser is included, so there is no need to source compatible components separately.
- Heat dissipation for LED strip: the aluminium body acts as a heat sink and helps extend LED service life.
- Architectural flexibility: convenient for creating continuous light lines and ceiling-to-wall transitions.
- Mechanical fixing ensures predictable geometry during finishing works.
Finish options
- Standard: natural aluminium
- Powder coating in any RAL colour — on request
How to order a custom colour? Click the “I want it painted in my colour” button, then click “FOLLOW UP”, enter your e-mail address and send your request. We will contact you to confirm the details.
Technical specifications
- Model: C-3-21
- Light channel width: 21 mm
- Material: aluminium
- Aluminium profile — 2000 mm
- Diffuser: light-stabilised, matte, white
- Installation type: mechanical fixing
Installation instructions (short)
- Install the profile onto the metal substructure for plasterboard installation and fix it mechanically.
- Attach the plasterboard to the metal substructure and to the profile.
- Complete the final finishing of the surfaces while maintaining the geometry of the light opening.
- Install the LED strip (according to the project) and click in the diffuser after all finishing works are completed.
