Aluminium ceiling shadow-gap profile. C-1 White colour.
Aluminium ceiling shadow gap profile C-1 (RAL 9003)
Indirect LED lighting and a refined perimeter shadow gap for a modern minimalist interior.
The C-1 RAL 9003 aluminium ceiling shadow gap profile by ASP Profiles is designed for contemporary wall-to-ceiling junction detailing and architectural perimeter lighting. Its adjustable set-back helps you create a light recess for a concealed LED strip, reflected-light effects, and elegant light outlines in modern interiors.
C-1 is used for soft, indirect perimeter ceiling lighting or for more graphic lighting accents. Made from 6063-T5 aluminium alloy, it helps dissipate heat from LED strips and supports long-term system reliability. Standard colour is RAL 9003 (white); other RAL colours are available on request.
Technical library for architects:
- 📑 View catalogue (PDF)
- 📐 Download technical drawings (DWG)
- 🧊 Download 3D models
- 🧪 Order samples — this helps you choose the ideal solutions for your clients by seeing them in person.
🇬🇧 Notice for customers from the United Kingdom
UK payment and taxes: To keep your price VAT-free and speed up customs clearance, we strongly recommend choosing “Bank Transfer” as the payment method. This allows us to adjust the order and issue an invoice without VAT. UK import VAT is collected by the courier upon delivery. However, if you have already paid online including VAT — don’t worry. We will refund the VAT amount, although this process may take a little longer.
Logistics and inspection: Delivery of bulky items from our EU warehouses usually takes 3–10 business days. Please check your order within 3 calendar days of receipt.
Ordering samples: As linear profiles are non-returnable, we recommend ordering samples before placing a large order. This helps you choose the ideal solutions for your clients by seeing them in person. Thank you!
Reference: Official guidance on gov.uk.
Why choose C-1
- Modern minimalist ceiling detail with a refined perimeter shadow gap.
- Ideal for concealed LED strips, light recesses, and reflected (indirect) lighting.
- Adjustable set-back for precise tuning of the lighting effect.
- 6063-T5 aluminium improves heat dissipation and rigidity for long-term performance.
Finish options
- Stock programme: white RAL 9003.
- Other RAL colours – on request.
How to order a custom colour? Click the “I want to paint it in my own colour” button, then click “FOLLOW UP”, enter your email address, and submit your request. We will contact you to discuss the details.
Technical specifications
- Length: 2500 mm
- Material: 6063-T5 aluminium alloy
- Finish: powder coating (RAL 9003)
- Lighting: LED strip (reflected indirect light)
- Fixing: mechanical
- Application: residential, office, commercial, and architectural interiors
Installation instructions (short)
- Prepare the ceiling framework and mark the lighting line.
- Install the profile at the required distance from the wall.
- Fine-tune the set-back to achieve the desired lighting effect.
- Fix the profile mechanically.
- Fill and level the joints/seams.
- Install the LED strip and connect the power supply.
- Complete the final finishing of the ceiling and wall surfaces.
