A LED downlight housing kit is the physical enclosure that holds the LED light source, driver, and optical components inside a ceiling. It is not a complete luminaire — it has no electrical circuit, no active LED chip, and no driver included. It is a passive aluminum shell with associated optical and mounting hardware, designed for buyers who assemble their own finished downlights.
This distinction matters: a housing kit is a component, and the certifications, testing, and compliance that apply to finished luminaires do not apply to the housing itself. [1]
Published: September 4, 2026 | Last Updated: September 4, 2026 | Reading Time: 8 min | Author: ECOLEDKIT Technical Team
Related: COB vs SMD LED Downlight Housing | LED Downlight Housing FAQ | COB Downlight Housings
What a Housing Kit Contains
A standard COB LED downlight housing kit from ECOLEDKIT includes:
| Component | Purpose | Material |
|---|---|---|
| Main housing body | Holds COB LED + driver, mounts into ceiling | ADC12 die-cast aluminum / extruded aluminum / cold-forged aluminum |
| Heat sink (integrated or separate) | Dissipates thermal energy from LED | Same as housing — aluminum alloy |
| Reflector or lens holder | Directs and shapes light output | Aluminum (reflector) or PC (lens holder) |
| Spring clips or screw mounts | Secures housing in ceiling cutout | Steel spring / steel screws |
| Terminal block / wiring space | Connection point for driver output | Plastic or ceramic |
| Bezel / trim ring | Visible edge around light opening | Die-cast aluminum or stamped aluminum |
A kit does not include: COB LED module, LED driver, wire leads, or any electrical component.
Why Housing Kits Exist — The Assembly Model
The global LED downlight supply chain has two paths:
| Path | What You Buy | Who Adds the LED | Typical Buyer |
|---|---|---|---|
| Finished luminaire | Complete light with LED + driver inside | Factory | Retail, small projects |
| Housing kit (SKD) | Empty housing + optics + clips | You (the buyer) | Importers, assemblers, project contractors |
The housing kit model exists because:
- LED technology changes faster than housing tooling. A COB module may be updated every 12–18 months. The aluminum housing design remains stable for 5+ years. Separating them avoids obsolete inventory.
- Buyers control quality. You choose the LED brand (CITIZEN, Bridgelux, Samsung), the driver brand (Mean Well, Inventronics, OSRAM), and the color temperature. The housing is the constant.
- Customization at assembly. Different markets require different LED specs (color temperature, CRI, dimming protocol). One housing model can serve multiple finished-product SKUs with different LED/driver combinations.
- Cost structure. Housing kits cost 30–50% less than equivalent finished luminaires because you’re not paying for the LED and driver markup.
Housing Kit vs Finished Downlight — Detailed Comparison
| Factor | Housing Kit | Finished Luminaire |
|---|---|---|
| LED source | Buyer selects and installs | Factory-installed |
| Driver | Buyer selects and installs | Factory-installed |
| Certifications (CE/UL/ETL/SAA) | Not applicable — passive component | Required — active electrical product |
| Warranty responsibility | Buyer owns LED + driver warranty | Factory owns full warranty |
| Customization | Unlimited — swap LED/driver anytime | Limited to factory options |
| Minimum order | 100 sets per model | Typically 500–1000 pcs |
| Lead time (in stock) | 3 days | 15–25 days |
| Unit cost | Housing only ($2–8) | Complete ($8–30+) |
| Quality risk | Buyer controls LED/driver quality | Depends on factory’s component choices |
| After-sales | Replace LED or driver independently | Return entire unit |
The Four Housing Types by LED Architecture
Not all downlight housings are the same. The internal architecture determines which LED type and optical system it supports.
1. COB Housing (ECOLEDKIT’s focus)
COB (Chip-on-Board) LEDs are a single multi-die LED package mounted directly on the housing’s heat sink. [2] The housing must provide:
- A flat mounting surface for the COB module
- A lens or reflector that covers the COB’s emitting surface
- Sufficient thermal path from COB to heat sink fins
COB housings are the most common architecture for professional downlighting because the single-point source produces uniform light with a well-defined beam.
2. SMD Housing
SMD (Surface-Mount Device) LEDs are multiple small LED chips distributed on a circular PCB. [2] The housing must provide:
- A mounting surface for the circular LED PCB (typically screwed or thermally adhered)
- A diffuser cover (not a lens) to blend the multi-point output
- Enough depth for the PCB + diffuser stack
SMD housings are used for lower-cost residential downlights with wider beam angles but lower CRI and less precise beam control.
3. Integrated Housing
The LED chip is permanently bonded to the housing’s heat sink. The entire unit is the “light.” If the LED fails, the entire housing is discarded.
This model is common in consumer-grade downlights but is not used in professional or commercial projects where serviceability matters.
4. Retrofit Housing
An existing halogen downlight housing is retrofitted with a LED module. The housing is not designed for LED thermal management — it relies on the LED module’s own heat dissipation.
Retrofit housings are a transition product. For new installations, purpose-designed LED housings provide better thermal performance.
What Buyers Actually Ask About Housing Kits
Do I need CE/UL for the housing?
No. CE (LVD + EMC), UL, ETL, and SAA all apply to finished luminaires with active electrical circuits. A housing kit has no rated voltage, no emission source, and no electrical circuit. [3] It falls outside the scope of these directives.
What documentation can the housing supplier provide?
| Document | What It Proves |
|---|---|
| Material certificate (ADC12) | Aluminum alloy grade and chemical composition |
| Dimensional inspection report | Manufacturing accuracy vs spec sheet |
| Surface treatment data | Powder coating type, thickness, color code |
| IP test report | IEC 60529 test method and results |
Can I claim the housing is IP65 if I seal it myself?
No. IP rating is determined by structural design — gasket grooves, cable gland provisions, manufacturing tolerances — all engineered into the die-casting mold. You cannot upgrade IP20 to IP44 or IP65 by adding sealant. [4]
What’s the minimum order?
ECOLEDKIT’s standard MOQ is 100 sets per model (50 sets negotiable for trial orders). This is already one of the lowest MOQs in the industry, where 500 pcs per model is typical.
How Housing Kits Fit Your Supply Chain
Your Company (Importer/Assembler)
├── Housing kits → ECOLEDKIT (or similar supplier)
├── COB LEDs → CITIZEN / Bridgelux / Samsung distributor
├── Drivers → Mean Well / Inventronics / OSRAM distributor
└── Assembly → Your facility or local contract assembler
└── Finished luminaire → Your certification (CE/UL/SAA) → Your market
You own the finished product’s certification, warranty, and brand. The housing supplier provides the physical platform. The LED and driver suppliers provide the active components. You control the quality at every stage.
ECOLEDKIT’s Housing Kit Lineup
| Series | Type | Heat Sink Material | Power Range | Key Feature |
|---|---|---|---|---|
| 6100 | Recessed / Surface | Die-cast Aluminum | 5–25W | Standard embedded + surface mount |
| 6200 (deep anti-glare) | Deep recessed | Cold-Forged / Extruded Aluminum | 7–60W | UGR<19, museum-grade |
| 6200 (shallow/flush) | Shallow recessed | Die-cast / Aluminum Profile | 30–40W | Low ceiling clearance |
| 6200 (multi-optic) | Recessed | Die-cast Aluminum | 7–40W | Lens / Reflector / Adjustable focus |
| 6210 series | Square / Double-head | Extruded Aluminum | 7–60W | Non-circular aperture |
All models in the current range are COB-only, IP20, ADC12 die-cast aluminum or aluminum alloy. 100+ variants in stock.
Key Takeaways
- A LED downlight housing kit is a passive component — no LED, no driver, no electrical circuit.
- CE/UL/ETL/SAA do not apply to housing kits. The buyer certifies the finished luminaire.
- The kit model gives buyers control over LED brand, driver choice, and quality.
- Housing kits cost 30–50% less than finished luminaires and ship faster (3 days vs 15–25 days).
- COB is the dominant architecture for professional downlighting — precise beam, uniform output, single-point source.
References
- Wikipedia, “Light-emitting diode”
- Wikipedia, “LED lamp”
- Wikipedia, “Low Voltage Directive”
- Wikipedia, “Ingress protection (IP code)”
Related reading: what an SKD kit includes.