This industrial ventilation roof fan is published with the manufacturer’s full specification — power source Electric, material Aluminum Alloy. Made by Qingdao Damuyuan Machinery Manufacturing Co., Ltd. (4 years on the platform, typical reply ≤2h). For a binding price and lead time, send the volume you need and where it ships to.
Key Features of This Industrial Ventilation Roof Fan
- Model Number: 315mm, 400mm, 500mm, 560mm, 630mm, 710mm, 800mm, 900mm, 1000mm, 300mm
- Power Source: Electric
- Power: 0.18 kw- 7.5 kw / 0.25 hp – 10 hp
- Voltage: 120 V, Other, 220v, 380v, 110v, 440v, 240v, custom
- Material: Aluminum Alloy
- Blade Material: Aluminum Alloy
Technical Specifications
| Blade Diameter | / |
|---|---|
| Voltage | 120 V, Other, 220v, 380v, 110v, 440v, 240v, custom |
| Speed | 2500 RPM, 2700 RPM, 2100 RPM, 1350RPM, 3 000 RPM, 2800 RPM, 2900rpm, 2400rpm, 920rpm, 2600RPM, 1450RPM |
| Type | Roof Fan |
| Material | Aluminum Alloy |
| Blade Material | Aluminum Alloy |
| Mounting Type | standing type Fan |
| Bearing Type | / |
| Power Source | Electric |
| Warranty | 1 Year |
| After-Sales Service Provided | Online support |
| Customized Support | OEM, ODM, OBM |
| Place Of Origin | Shandong, China |
| Brand Name | Damuyuan |
| Model Number | 315mm, 400mm, 500mm, 560mm, 630mm, 710mm, 800mm, 900mm, 1000mm, 300mm |
| Product Name | downblast roof exhaust fan |
| Power | 0.18 kw- 7.5 kw / 0.25 hp – 10 hp |
| Usage | Roof Exhaust Ventilation Fan |
| Installation | Roof Install |
| MOQ | 1 set |
| Blade Size | 300 mm – 1000 mm |
| Color | silver / customization |
| Application | Exhaust Ventilation |
| Certification | CCC/CE/ISO9001 |
| Selling Units | Single item |
| Single Package Size | 100X100X100 cm |
| Single Gross Weight | 200.000 kg |
Product Details
Downblast Roof Fan


2. Roof Exhaust Fan
4.Pure copper Motor
5.Anti-explosive Type Is Available






Model | Blades dia mm | Power | Air volume m³/h | Pressure pa |
RTC-300 | 315 | 0.12KW-6P | 1276-2070 | 125-62 |
0.18KW-6P | 1517-2460 | 129-65 | ||
0.25KW-4P | 1962-3010 | 194-93 | ||
RTC-425 | 400 | 0.18KW-6P | 1843-4040 | 161-80 |
0.25KW-6P | 3146-5033 | 168-82 | ||
0.55KW-4P | 4077-5609 | 291-140 | ||
0.75KW-4P | 4598-6722 | 324-157 | ||
RTC-500 | 500 | 0.25KW-8P | 3680-5855 | 205-59 |
0.55KW-6P | 4730-7510 | 223-95 | ||
0.75KW-6P | 5440-8585 | 227-98 | ||
1.1KW-4P | 7773-10885 | 378-178 | ||
2.2KW-4P | 7920-11450 | 454-254 | ||
RTC-575 | 560 | 0.37KW-10P | 4278-6690 | 147-56 |
0.55KW-8P | 4306-8486 | 181-79 | ||
0.75KW-8P | 5280-9475 | 180-84 | ||
1.1KW-6P | 6708-10420 | 236-100 | ||
1.5KW-6P | 9455-12953 | 246-102 | ||
RTC-675 | 630 | 0.75KW-8P | 8220-13201 | 298-125 |
1.1KW-8P | 6144-14459 | 324-148 | ||
1.5KW-6P | 7224-16520 | 432-181 | ||
2.2KW-6P | 10620-18720 | 432-197 |


























1. Good quality, Competitive price, Fast delivery.
2. We have a R&D team who have average 10 years experience in designing and producing fans, we can OEM different kinds of products according to your requirement, in order to produce the products more suitable to your market !
3. We have a lot of customers from overseas. A lot of our customers has established long term business relationship with us.
4. All the products have 1 year warranty. All products are conducted strict QC and inspection before shipping.
5. If you have any problems or suggestions about our products or service, you can contact me or our sales manager whenever you want. We will give you a satisfying reply.


Ordering and Pricing
- Minimum order quantity: 1 piece
- Volume pricing:
- 1–9 piece: US $299 / piece
- 10–99 piece: US $199 / piece
- 100+ piece: US $149 / piece
- Ships from: China
- Customization: OEM and ODM accepted on qualifying volumes.
Frequently Asked Questions
What is the minimum order quantity for this industrial ventilation roof fan?
The standard minimum order quantity is 1 piece. Trial orders can usually be arranged for buyers evaluating the product before a full production run.
What warranty is provided?
The manufacturer provides a 1 Year warranty. Spare parts and technical support remain available after the warranty period.
Which certifications does this industrial ventilation roof fan carry?
It is supplied with CCC/CE/ISO9001 documentation, which covers the requirements of most import markets. Additional test reports can be issued on request.
Can the industrial ventilation roof fan be supplied for my local voltage?
The standard configuration is 120 V, Other, 220v, 380v, 110v, 440v, 240v, custom. Alternative voltage and frequency builds are available when specified at the time of order.
Do you accept OEM or custom branding?
Yes. Custom logo, colour, packaging and specification changes are accepted on qualifying order volumes. Send your artwork and technical requirements with your enquiry.
How long does production and delivery take?
In-stock configurations typically ship within 7–15 days. Customised or large-volume orders are usually produced in 25–35 days, confirmed on order.
About the Manufacturer
This product is produced by Qingdao Damuyuan Machinery Manufacturing Co., Ltd., based in China. The company 4 years as a verified Alibaba.com supplier, operates its own manufacturing. Browse the full Qingdao Damuyuan Machinery Manufacturing Co., Ltd. range on HVACR Nexus.
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