JUST☀️ Solar Modules
JUST TOPCon Full Black 420-440W — Residential
Full-black 16BB half-cut TOPCon bifacial for premium residential rooftops
N-type TOPCon bifacial double-glass residential module with 108 half-cut 182mm cells, 22.53% efficiency and black-on-black aesthetics. Designed for residential 3–10 kW systems where roof appearance and yield both matter.
Power Range
420W – 440W
Max Efficiency
22.53%
Full Specifications
| Technology | N-type TOPCon (16BB half-cut) |
| Model | JST-EFMH-(420-440)W-TD |
| Power Range | 420W – 440W |
| Max Efficiency | 22.53% |
| Cell Count | 108 (182mm half-cut) |
| Annual Degradation | 0.40%/yr |
| Module Dimensions | 1722 × 1134 × 30 mm |
| Frame / Backsheet | Full black anodized / Black |
| Wind Load | 2400 Pa |
| Snow Load | 5400 Pa |
| System Voltage | 1500V DC |
| Power Tolerance | 0 to +5W (positive only) |
| Product Warranty | 12 years |
| Power Warranty | 30 years linear to 87.4% |
Key Strengths
- ✓Full-black residential aesthetic — premium rooftop look
- ✓16BB half-cut cells — lower internal resistance than 9/12BB
- ✓2400 Pa wind / 5400 Pa snow — EU / North American climate compliant
- ✓TOPCon bifacial — up to +5% yield on reflective roofs
- ✓Self-cleaning AR glass — minimal O&M
Technical Datasheet
JUST TOPCon Full Black 420-440W — Residential — Datasheet PDF
JST-EFMH-(420-440)W-TD
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Open / Download →
Certifications
IEC 61215IEC 61730TÜV NORDCERoHSISO 9001ISO 14001ISO 45001CQCIntertekBIS (India)UL
Certificate documents available upon request (stamped digital / scanned original).
Best For
Residential single-phase 3–10kW rooftops, premium EU + North America markets
Trade Terms
- MOQ
- 1 × 40HQ container (≈720 pcs)
- Lead Time
- 20–30 days FOB Ningbo / 5-day EU delivery from Skopje
- Indicative Price
- $0.100 – 0.120 / W FOB (residential full-black premium ≈ +10-15% over InfoLink TOPCon 580W $0.093)
* Subject to market — submit RFQ for formal FOB quote.
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