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We’ve been moving these for a few years now, and the 2500m³/h exhaust volume is usually more than enough for a standard warehouse roof or a large attic space—it’s about 14 inches across, so the hole size matches the dryer diameter exactly, which saves you from having to adapt anything. The brushless DC motor is tuned to the solar panel’s voltage curve, so it’s not just a generic fan strapped to a panel; what it does is maximize airflow even when sunlight dips a bit, and that 45W, 15V panel keeps it humming without pulling from the grid.
Actually, one thing that surprises buyers is how quiet it runs—under 45dBA, which is quieter than most box fans you’d plug into a wall, so you won’t hear it cycling on a hot afternoon. But it’s not suited for spaces where you need constant, forced airflow on cloudy days, because without direct sun the RPM drops noticeably; we usually have stock, but check lead time if you need a backup AC unit for those stretches. The aluminun alloy blades are dynamically balanced, so they don’t wobble at high speed, and the five-leaf design helps push air more evenly than a three-blade setup would.
3, we offer it in black or white, both with an epoxy resin powder coating that’s UV-resistant—basically, it won’t chalk or fade after a few summers on a south-facing roof. The stainless steel fasteners are a nice touch; galvanized bolts would corrode in coastal areas, but these hold up fine in salt spray environments (usually 2-4 weeks for custom colors though). One buyer used it for a greenhouse exhaust setup and found the noise level acceptable for livestock, which I wouldn’t have guessed, but it worked.
Also, the bottom plate is 570x570x1mm, so you’ll want to confirm your roof curb dimensions before ordering—it fits standerd 14-inch rough openings, but the bracket and base mount are steel, so it’s heavier than a plastic unit, about 50 units or so in a pallet. And if you’re dealing with high ambient temps above 50°C, the motor’s thermal protection kicks in, so don’t expect full flow in a foundry setting; it’s more for commercial or residential energy-saving buildings.
We usually stock the SV-50W model as the most popular, but the OEM labeling means you can get your own brand on it if the MOQ works for you—roughly 200 pieces for custom packging. I’ve got a COA from the factory that shows HPLC-level purity isn’t relevant here, but RoHS certification is on file, and the 1-year the motor and panel against defects; the fan blades themselves rarely fail unless something hits them.
We typically ask for a minimum of 50 units for a first order, but we can be flexible depending on your project size. Just let us know what you need.
Lead time is usually 15-20 working days after order confirmation and deposit. For larger orders, we might need a bit more time, so give us a heads up.
Yes, it's RoHS certified, so it meets the strict environmental and safety standards. We can provide the certificate upon request.
Absolutely, we offer both black and white as standard, but we can match custom colors with the UV resistant epoxy powder coating. Just send us the RAL code or a sample.
The brushless DC motor is tuned to work with the solar panel's output curve, so it automatically adjusts speed based on available sunlight. No external controller needed—just hook it up and it runs when the sun's out.
