Product Description
Wall Mounted Exhaust Fan
Product Introduction
The blade of the air blower adopts wing type hollow blade of aluminum alloy of the patented product. With advanced producing craft, this wall mounted exhaust fan has big air volume and with high efficiency, low noise and steady performance.
The exhaust fans are made of aluminum alloy, their surfaces are treated with anode oxidation or baked paint, static plastic spraying.
Fan angle can be adjusted in 0°~90°.
Fan can be mated with adjustable valve or filter net.
Key Features
Core Advantages: Built for Tough Conditions
1. Durable Materials for Longevity
- Structure: Constructed with 304 stainless steel or Q235 carbon steel frames, surface-treated with hot-dip galvanization or powder coating to resist high humidity, acidic gases (e.g., ammonia in livestock barns), and dust-extending service life by over 50%.
- Protection Rating: IP55 dustproof and waterproof, designed for long-term operation in outdoor or wet environments with minimal maintenance.
2. Powerful Ventilation & Temperature Control
- High Airflow Design: Equipped with low-speed, high-torque pure copper motors and impellers ranging from 300mm to 1200mm in diameter, delivering up to 15,000 m³/h of air volume. Quickly expels hot, humid air, odors, and harmful gases to reduce temperature and humidity in greenhouses/livestock facilities, minimizing mold growth and animal stress.
- Quiet Operation: Aerodynamically optimized impellers ensure noise levels ≤75dB, avoiding disturbance to livestock or crop growth.
3. Flexible Installation & Adaptability
- Compact Square Design: Mounts flush against walls to save space, suitable for greenhouse side walls, livestock barn walls, or ceilings (with optional ceiling brackets).
- Adjustable Airflow Angle: Manual 0-45° blade angle adjustment directs air flow precisely, ideal for targeted ventilation (e.g., bottom ventilation for seedbeds or cooling for livestock activity areas).
4. Intelligent Control & Energy Efficiency
- Multi-Speed Settings: 3-speed control (high/medium/low) matches seasonal and environmental needs, reducing energy consumption.
- System Compatibility: Connects to temperature/humidity sensors or PLC control systems for automatic start/stop and speed adjustment, enabling smart environmental management.
Detailed Photos

Product Parameters
Technical Parameter Form
Direct connection
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 |
Belt connectio
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 |
Applications
Packaging & Shipping
Our Advantages
Shuangyi, founded in 1984, with factory in Dezhou city, Shandong province, China, has 4 plants for different products. We have been supplying Cooling tower, Fans, Water tank,etc to global market for more than 10 years.
FAQ
1. Q: Are you Trading Company or Manufacturing Factory?
A: We are both manufacturer trading and company. We have our own factory for almost 40 years, and we have better service of overseas customers. Welcome to send your inquiry!
2. Q: I am interested in your products, could I get sample for free?
A: We can supply a few pieces 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: 10-15days after receiving the deposit based on the MOQ. Normally, 30-35days to finish the order for a 20ft container.
Welcome to ask for the detailed delivery time according to your order quantity!
4. Q: How can you guarantee the product quality?
A: We have the quality control system ISO9001:2015, and it's been followed strictly. We also have the professional QC team,and each our package worker will be in charge of the final inspection according to the QC instruction before packing.
5. Q: What is about the payment terms.
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,just contact us and give me your design,we will offer you a reasonable price ASAP.
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 Notice
1. If you knows little but only the volume or area of your warehouse, plant or workshop, like their length, width, height, please make sure that contact us in time. By doing so, our engineers can design the specifications and quantity of the product in your need.
2.If there is no specification parameter that required in the parameter table, please tell us your requirements and we will give you a satisfactory designing 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 change in the order before our delivery, we will give you an exquisitely prepared present.
4.If there is any difficulty in transportation, please contact us immediately and we will give you a satisfactory plan to save freight as much as possible.