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Custom Black LED Diffuser Cover for Aluminum Linear Profiles
PC/PMMA-Dif-B

Custom Black LED Diffuser Cover for Aluminum Linear Profiles

Material: 100% Optical-Grade Virgin PC / PMMA (Acrylic)

Dimensions: Custom profile width, wall thickness, and length (per CAD drawing/sample)

Optical Effect: Sleek matte black when off; uniform, hotspot-free illumination when powered on

Features: Snap-in fit, high impact strength, UV-resistant (anti-yellowing), optional UL94-V0 flame retardant

Custom Service: Custom extrusion tooling, light transmittance tuning (20%–50%), precision cut-to-length & OEM options

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Product Overview

This custom black LED diffuser is designed for commercial LED channels and architectural linear profiles. Extruded from 100% virgin PC or PMMA, it delivers a sleek matte black look when off and soft, hotspot-free illumination when powered on. We provide full OEM services including custom extrusion tooling, light transmittance tuning, and precise length cutting with tight tolerances, UV resistance, and fast snap-in installation.

Technical Specifications

Item
Specification / Capability
Material Options
Optical Grade PC (Polycarbonate) / PMMA (Acrylic)
Color & Finish
Matte Black / Dark Smoke (Custom light transmittance 20%–50%)
Fitting Compatibility
Standard & Custom Aluminum Linear Channels (Snap-in or Slide-in)
Flame Retardancy
UL94-V2 / UL94-V0 Rated (Optional)
UV & Weatherability
High UV Resistance, Anti-Yellowing & Non-Brittle Outdoor Performance
Standard Lengths
1M, 2M, 3M, or Precision Custom Cut-to-Length
Tolerances
Tight Extrusion Tolerance within ±0.1mm
Custom Services
Tooling Design, Rapid Prototyping, OEM/ODM Profile Extrusion

Frequently asked questions

Yes. Based on your lighting design demands, we may formulate the resin to reach light transmittance levels from 20% (deeper black esthetic) to 50% (better lumen efficiency) while fully hiding the LED diodes.

Absolutely. We provide both 100% virgin PC and optical PMMA materials. PC is the preferred choice for applications requiring strong impact resistance and flame retardancy (UL94-V0). PMMA delivers good optical clarity and superior UV weatherability.

Yes we are specialized in OEM/ODM customized plastic extrusions. Take your CAD models or real samples of the aluminum channel and our engineering team will develop and build the exact tooling for the extrusion to achieve a perfect snap in fit.

Our complete secondary processing capabilities are comprised of precision cut to length, miter cut for corner joints, custom punch holes, and individual protective film packing.

Our MOQ is different for different profile size and weight. The normal MOQ for small or narrow light diffusers is 3,000 meters and for wider or thicker custom profiles it can be as low as 500 to 800 meters. Custom extrusion tooling design and sample prototype is typically 12 – 15 days.

Key Applications

  • Architectural & Recessed Linear Lighting: Ideal for modern recessed ceiling profiles, wall washers and dark interior architecture to create a “ghost effect” where the light sources are invisible when off..
  • Commercial & Retail Shelf Illumination: Commonly used in luxury retail displays, showcase channels and hospitality ambient lighting for elegant esthetic integration and glare free illumination.
  • Cabinet & Furniture LED Channels: Perfect for under-cabinet strip profiles and custom furniture joinery requiring a discreet, non-intrusive black fixture profile.
  • Outdoor & Facade Accent Strips: Provides protective covers for linear light bars and outside architectural channels where high impact strength and long-term weatherability are required without color degradation..

Customization & Support

EXLONG PLASTICS delivers high-quality extrusion manufacturing services to a wide range of industries. Our extruded products includes PC, PMMA tubes, pipes, light diffusers, strips,  bars, and custom linear profiles. Our extrusion products are built to rigorous quality controls for commercial and industrial applications with excellent optical clarity, UV resistance and structural integrity. From standard stock sizes, to custom colors, wall thicknesses and cut lengths, we completely personalize every solution to fit your exact project specs. 

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