Presenting the Square Wall Mounted Exhaust Fan - a masterpiece of engineering, elegance, and performance.
Comprehensive Brief Introduction
Our state-of-the-art air blower features a patented wing-type hollow blade crafted from robust aluminum alloy. This unique design, coupled with cutting-edge production techniques, ensures that the wall-mounted exhaust fan delivers an impressive air volume with unparalleled efficiency. Experience the quiet operation and reliable performance that makes our fan a standout choice for any industrial environment.
These exhaust fans are expertly constructed from high-quality aluminum alloy. The surfaces are exquisitely treated with anode oxidation or baked paint, complemented by a sleek static plastic spraying finish for both aesthetic appeal and durability.
The fan angle offers versatile adjustment options ranging from 0° to 90°, catering to your specific ventilation needs.
For enhanced functionality, the fan can be seamlessly integrated with an adjustable valve or filter net, ensuring optimal performance in any setting.
Ingenious Product Structure

Technical Parameter Form
The First Type: Direct Connection - Streamlining Power Delivery and Efficiency.
Model |
Diameter
(mm) |
Air volume (m³/h) |
Power
(kw) |
Size
(mm) |
BF30-2.5 |
250 |
960 |
0.025 |
360*360*220 |
BF30-2.8 |
280 |
1331 |
0.025 |
400*400*220 |
BF30-3.15 |
315 |
1895 |
0.04 |
430*430*230 |
BF30-3.55 |
355 |
2712 |
0.09 |
465*465*240 |
BF30-4 |
400 |
3879 |
0.18 |
510*510*250 |
BF30-4.5 |
450 |
5500 |
0.25 |
560*560*270 |
BF30-5 |
500 |
7500 |
0.37 |
630*630*290 |
BF30-7.7 |
770 |
20000 |
0.55 |
900*900*370 |
BF30-9.3 |
930 |
34000 |
0.75 |
1060*1060*370 |
BF30-11.1 |
1110 |
39000 |
0.75 |
1220*1220*370 |
BF30-12.5 |
1250 |
46000 |
1.1 |
1380*1380*400 |
The Second Type: Belt Connection - providing flexible, reliable energy transmission.
Model |
Diameter
(mm) |
Air Volume (m³/h) |
Total Pressure
(Pa) |
Input Power
(kw) |
Size
(mm) |
620A |
500 |
18000 |
60 |
0.37 |
620*620*370 |
800A |
710 |
22000 |
60 |
0.37 |
800*800*370 |
900A |
750 |
28000 |
65 |
0.55 |
900*900*370 |
1000A |
900 |
30000 |
70 |
0.55 |
1000*1000*370 |
1100A |
1000 |
32500 |
70 |
0.75 |
1100*1100*370 |
1220A |
1100 |
38000 |
73 |
0.75 |
1220*1220*370 |
1380A |
1250 |
44000 |
56 |
1.1 |
1380*1380*370 |
1530A |
1400 |
55800 |
60 |
1.5 |
1530*1530*370 |
Outstanding Features:
(1) The frame and blades are crafted from high-strength, glass-fibre-reinforced plastic material, ensuring corrosion resistance and durability.
(2) Equipped with an aluminum efficient motor, boasting 0.75 kW of energy-efficient power.
(3) Direct drive design eliminates the need for belts, reducing maintenance requirements and enhancing longevity.
(4) Features a sturdy four-point fixing bracket for enhanced motor stability.
(5) Constructed with stainless steel screws, offering excellent anti-corrosion properties to withstand acidic and alkaline environments.
(6) Incorporates PVC blinds for effective rain and mosquito protection, ensuring uninterrupted performance.
(7) Includes a safety net to prevent foreign object intrusion, significantly boosting operational security.
(8) Designed with a waterproof tank, strategically positioned to prevent water intrusion, thus safeguarding the interior components.
ABOUT US
Shandong Shuangyi Group Co., Ltd., founded in 1984, stands as a beacon of innovation in the realm of ventilation equipment R&D, production, and sales. Headquartered in Jinan City, Shandong Province, known as the "Hometown of Springs in China," our production facilities are strategically located in Xinhua Industrial Park, Dezhou City, Shandong Province. As an internationally certified ISO9001 quality system enterprise, we are committed to excellence and innovation in every product we deliver.
1. Q: Are you a Trading Company or a Manufacturing Factory?
A: We are both a manufacturer and a trading company. We have been in the factory for almost 40 years, providing better service to our overseas customers. Welcome to send your inquiry!
2. Q: I am interested in your products. Could I get a sample for free?
A: We can supply a few pieces of free samples if we have some in stock, and you only need to pay the freight cost by yourself.
Welcome to send your inquiry for FREE samples!
3. Q: How about the Delivery time?
A: 10- 15 days after receiving the deposit, based on the MOQ. Normally, 30-35days to finish the order for a 20ft container.
Please feel free to ask for a detailed delivery time according to your order quantity.
4. Q: How can you guarantee the product quality?
A: We have a quality control system based on ISO 9001:2015, and it has been followed strictly. We also have a professional QC team,and each of our package workers will be in charge of the final inspection according to the QC instructions before packing.
5. Q: What is the payment term?
A: Basically, the payment terms are T/T, L/C at sight. Western Union, Alipay.
6. Q: Can you do OEM for me?
A: We accept all OEM orders. Contact us with your design, and we will offer you a reasonable price as soon as possible.
7. Q: Can you describe the heavy-duty industrial exhaust fans using some keywords?
A: Negative Pressure Heavy Duty Hammer Exhaust Fans
Cooling Ventilator Heavy Duty Industrial Exhaust Fan
Factory Wholesale Heavy Duty Hammer Exhaust Fans
Bulk Purchases Heavy Duty Industrial Exhaust Fans
Environmentally Friendly Energy-saving Exhaust Fan
Quiet and High-Efficient Axial Flow Fan for Paint Booths
Purchasing Notes
1. If you only know the volume or area of your warehouse, plant, or workshop, such as its dimensions (length, width, and height), please get in touch with us promptly. By doing so, our engineers can design the specifications and quantity of the product to meet your needs.
2. If there is no specification parameter required in the parameter table, please specify your requirements, and we will provide a satisfactory design scheme.
3. If you have confirmed our products, please place an order and then make payment. After that, we will arrange delivery as soon as possible. Without a change in the order before delivery, we will provide you with an exquisitely prepared gift.
4. If you encounter any transportation difficulties, please contact us immediately, and we will provide a suitable plan to minimize freight costs as much as possible.