Detailed Technical Specifications
Complete engineering data for this 20mm frosted PC LED strip diffuser - including material properties, dimensions, and optical performance metrics for procurement and design verification.
| Parameter | Value / Description |
|---|---|
| Product Name | Milky PC Fire-Rated LED Strip Diffuser Cover - 20mm |
| Base Material | Polycarbonate (PC) - milky white diffusion compound |
| Profile Width | 20 mm (fits standard 20 mm LED aluminum channels) |
| Profile Height | 10 mm |
| Wall Thickness | 1.5 mm ± 0.1 mm |
| Linear Weight | 60 g/m |
| Standard Length | 2,000 mm per piece (custom lengths available) |
| Color / Finish | Milky white (opal) - frosted diffusion surface |
| Luminous Transmittance | ≥ 80% |
| Haze | High haze - effectively conceals individual LED diodes |
| Flame Retardancy | Flame retardant grade, does not sustain combustion (V-0 / V-2 class) |
| Impact Resistance | High - PC is significantly stronger than PMMA and PVC |
| Heat Resistance | Excellent - suitable for enclosed LED fixtures with heat accumulation |
| UV Resistance | UV-stabilized anti-yellowing formula |
| Manufacturing Process | Precision plastic extrusion (custom mold tooling available) |
| Customization | Width, height, thickness, shape, opacity, and color all customizable |
| Quality System | ISO 9001 certified, updated annually |
What Sets This PC Strip Light Cover Apart
Unlike generic acrylic or standard-grade LED light covers, this opal-white polycarbonate diffuser profile is purpose-built for projects that demand both fire safety and superior optical performance simultaneously - a combination most suppliers struggle to deliver without compromising one for the other.
Self-Extinguishing Fire-Safe Cover
Manufactured from fire-rated polycarbonate resin that ceases burning shortly after ignition and produces no flaming drips. This is critical for commercial and public-space LED lighting installations where building fire codes require non-combustible or self-extinguishing components. Standard acrylic (PMMA) covers do not pass this level of fire testing.
High Luminous Transmittance with Milky White Diffusion
Achieving bright yet uniform light output from a frosted cover is the core technical challenge in LED diffuser design. Our extrusion process maintains greater than 80% luminous transmittance while eliminating visible LED hotspots - delivering a smooth, glare-free linear light effect without the heavy brightness loss typical of over-frosted covers. The milky opal finish conceals individual LED diodes completely, making it ideal for commercial lighting environments where both aesthetics and efficiency matter.
High Impact Resistance Construction
Polycarbonate is significantly stronger than acrylic (PMMA) and virtually unbreakable under normal conditions. This shatter-proof LED channel cover withstands vibration, accidental impact, and mechanical stress during transport and installation - a key advantage over brittle acrylic strips that crack during field cutting or handling.
Excellent Heat & Weather Resistance
PC material offers excellent dimensional stability across a wide temperature range - it will not warp in enclosed LED luminaire housings where heat accumulates, and it maintains flexibility in cold-chain environments such as commercial freezer display lighting. This thermal stability gives it a clear edge over PVC and acrylic alternatives in demanding conditions.
Custom Extrusion Profiles & OEM Service
As a vertically integrated plastic extrusion factory with in-house mold design, Dachang delivers custom-shaped LED cover profiles with mold tooling fabricated in as few as 72 hours. Whether you need a wider channel, a snap-fit clip design, or a different cross-section geometry - we engineer the profile to fit your aluminum LED housing system exactly.
UV-Stabilized Anti-Yellowing Formula
Standard plastic covers tend to yellow over time when exposed to UV radiation, degrading light quality. Our UV-stabilized milky white LED diffusion lens incorporates anti-yellowing agents that maintain optical clarity and color neutrality over years of continuous use - essential for long-life LED installations where cover replacement is impractical.
PC vs. Acrylic vs. PVC: Choosing LED Strip Cover Material
Choosing the right material for your LED channel diffusion lens depends on balancing optical quality, flammability performance, mechanical durability, and budget. Here is how polycarbonate stacks up against common alternatives used in extruded LED light covers.
| Property | PC (This Product) | Acrylic / PMMA | PVC |
|---|---|---|---|
| Optical Transmittance | 80–89% | 90–92% | 63–78% |
| Impact Strength | Very High | Moderate (brittle) | Low |
| Fire Rating | Self-extinguishing | Burns easily (HB grade) | Can achieve V-0 |
| Heat Tolerance | High | Moderate | Low - warps with heat |
| UV / Yellowing | UV-stabilized | Naturally UV-resistant | May discolor over time |
| Dimensional Stability | Excellent | Good | Fair |
| Field Cuttability | Cuts cleanly, no cracking | Prone to chipping/cracking | Cuts easily |
| Best Suited For | Commercial & safety-critical LED installations | Decorative / retail accent lighting | Budget strip covers, chemical exposure |
Where This LED Diffuser Cover Is Used
This safety-compliant PC strip light lens is especially suited for environments where building codes or project specifications require non-combustible materials in lighting components. Below are the primary scenarios where it delivers measurable value over standard-grade alternatives.
Commercial Office & Retail Linear Lighting
Modern commercial interiors rely on recessed and surface-mounted LED aluminum channel systems for clean, energy-efficient ambient lighting. Fire-safe diffuser covers satisfy commercial building fire safety requirements while providing the uniform, glare-free illumination architects specify for open-plan offices, retail display shelving, and hospitality environments. The 20mm profile integrates directly into standard commercial-grade aluminum LED channels without modification.
- Office ceiling coves
- Retail shelf lighting
- Hotel corridor accent
- Restaurant under-bar
Residential Under-Cabinet & Kitchen Installations
Kitchen and bathroom environments present unique challenges for LED strip covers: proximity to heat sources, steam exposure, and the need for safe materials near cooking areas. A fire-rated PC cover provides homeowners and contractors with a wholesale upgrade over standard acrylic - without sacrificing the soft, even light distribution preferred for task lighting over countertops, inside cabinetry, and around bathroom vanities.
- Under-cabinet task light
- Closet LED strips
- Bathroom vanity
Custom LED Cover Extrusion: Drawing to Bulk Delivery
Dachang Plastic has operated as a specialized plastic extrusion manufacturer since 1998, with 27 years of production experience and an in-house mold design department for rapid prototyping of custom diffuser profiles.
Drawing Review
Submit your CAD drawings or sketch. Our engineers review dimensions, tolerances, and material needs.
Mold Fabrication
In-house extrusion die design and machining - tooling ready in as few as 72 hours for standard shapes.
Sample Production
Trial run with your specified PC resin. Samples shipped for dimensional and optical approval before bulk order.
Mass Production
Full-scale extrusion with inline quality inspection. Lead time: 15–30 days for volume orders.
QC & Delivery
ISO 9001 quality checks, careful packaging to prevent bending, and worldwide shipping via sea or express.
27+
Years in Plastic Extrusion
100+
Production Staff
72h
Fast Mold Turnaround
ISO 9001
Certified Quality System
Frequently Asked Questions
Common questions from lighting product distributors, OEM buyers, and project engineers about sourcing custom PC LED diffuser covers from our factory.
Q: What level of flame retardancy does this milky PC LED strip cover achieve?
A: This fire-resistant strip light cover is manufactured from polycarbonate resin that does not sustain combustion. Under vertical burn testing, the material ceases burning shortly after flame removal and produces no flaming drips - meeting strict requirements for fire-safe LED lighting accessories used in commercial and public buildings. Specific V-0 or V-2 classification depends on wall thickness; please contact us for a detailed test report matching your project specifications.
Q: Can you customize the cross-section shape, width, or opacity of the extruded cover?
A: Yes. As a dedicated plastic extrusion factory with in-house tooling, we produce custom-profile diffuser extrusions in virtually any cross-section geometry. Common customizations include adjusting the width from 8 mm to 100 mm+, modifying wall thickness, changing from flat to curved or snap-fit profiles, and tuning the milky diffusion level to achieve the transmittance target your LED design requires. Our mold department can produce new extrusion dies within 72 hours for standard shapes.
Q: What is the minimum order quantity and sample policy?
A: We welcome sample orders for quality evaluation before committing to volume production. The standard cooperation process begins with a quotation based on your drawings, followed by 50% mold deposit, sample production and approval, then bulk order placement. MOQ is negotiable and depends on the complexity of the custom profile.
Q: Why choose polycarbonate over acrylic (PMMA) for LED strip covers?
A: PC outperforms polymethyl methacrylate (PMMA) in three areas critical for professional installations: impact resistance (PC is significantly stronger and will not shatter when cut or dropped), fire safety (PC is self-extinguishing while acrylic burns readily), and heat tolerance (PC handles higher temperatures). The trade-off is that acrylic offers marginally higher transmittance (90–92% vs. 80–89%) and better scratch resistance - making it preferred for decorative wholesale applications where fire safety is not the primary concern.
Q: What is the production lead time for bulk orders?
A: Sample production typically requires 3–5 business days after mold completion. For volume orders, standard lead time is 15–30 days depending on quantity and profile complexity. Our factory in Dongguan can accommodate urgent scheduling with advance coordination.
Q: Does Dachang provide OEM and ODM private-label services?
A: Yes. We serve as an OEM and ODM extrusion partner for lighting brands, distributors, and LED aluminum channel system manufacturers worldwide. Custom packaging, labeling, and neutral branding are all standard services. All business relationships are held in strict confidence.
Q: What quality certifications does the factory hold?
A: Dachang Plastic Hardware Processing Factory is ISO 9001 certified and updates its certification annually. Our quality department performs inline dimensional inspection during extrusion, batch-level optical testing, and outgoing quality control before shipment. We can provide material test reports and relevant compliance documentation upon request.