
Viridian 405W Clearline High Performance Monocrystalline All Black Solar Panel - Grade B
Viridian 405W Clearline High Performance Monocrystalline All Black Solar Panel - Grade B
The Viridian Clearline High Performance Monocrystalline All Black, rated 405 W, is offered here as Grade B stock.
What Grade B means
Grade B panels are electrically sound modules that carry minor cosmetic marks — scratches, blemishes or small dents to the frame or glass — picked up in transit or handling. They are sold at a discount to the same module in A-grade condition, which makes them worth considering for outbuildings, workshops, barns, ground mounts, off-grid systems and any array where cost per watt matters more than appearance.
Please read before ordering. All Grade B Item sales are final and sold as seen. Grade B items may have minor cosmetic imperfections (e.g., scratches, blemishes, dents, etc.) that do not affect functionality. ClearRay Solar makes no warranties of any kind, whether express or implied, respecting the performance, condition, suitability, merchantability, or any other quality of such items. Grade B Items are not eligible for returns, refunds, or exchange, and are exempt from the ClearRay Solar RMA policy. Product images are for illustrative purposes only and actual products may vary. Purchaser understands and agrees that assertion or enforcement of any manufacturer provided warranty is Purchaser’s sole responsibility.
Panel specification
- All-black: black frame and black backsheet
About the Clearline range
Clearline fusion is Viridian's roof-integrated system. The panels are fitted during the normal roofing programme and replace the tiles or slates beneath them, which keeps the array flush with the roof line and puts responsibility for weathertightness in one place.
Manufacturer specification
These are the manufacturer's published figures for this model in new, A-grade condition. Grade B units are sold as seen and carry no performance warranty from ClearRay Solar — see the notice above.
| Rated power (Pmax) | 405 W |
| Module efficiency | 20.7 % |
| Open-circuit voltage (Voc) | 37.05 V |
| Voltage at maximum power (Vmp) | 31.02 V |
| Short-circuit current (Isc) | 13.62 A |
| Current at maximum power (Imp) | 13.06 A |
| Cell technology | Monocrystalline silicon |
| Number of cells | 54 × 2 |
| Weight | 25.0 kg |
| Maximum system voltage | DC 1000 V |
| Temperature coefficient of Pmax | −0.35 %/°C |
About Viridian
Viridian Solar is a UK manufacturer specialising in roof-integrated solar. Clearline fusion sits in the roof plane in place of tiles or slates rather than on rails above them, and holds BBA certification along with MCS 005 and MCS 012.
Grade B stock is limited to the quantity held and is not restocked. For availability or pallet pricing, contact our sales team at sales@clearraysolar.com.
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- Inverters
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Delivery times vary by region:
- UK — 1-2 business days
- Highlands & Islands — 1-2 business days
Returns accepted within 14 days of delivery for unused items in original packaging.

