The factory design air blower listed here carries 380 V, material Stainless Steel, documented exactly as the manufacturer publishes it. Made by Shandong Roltec Ventilation Equipment Co., Ltd. (2 years on the platform, typical reply ≤4h). Quantity and destination market determine the final price — tell us both for a firm quote.
Key Features of This Factory Design Air Blower
- Model Number: 4A
- Voltage: 380 V
- Material: Stainless Steel
- Blade Material: stainless steel/carbon steel
- Speed: 3 000 RPM
- Warranty: 1 Year
Technical Specifications
| Mounting | Wall Fan |
|---|---|
| Voltage | 380 V |
| Speed | 3 000 RPM |
| Material | Stainless Steel |
| Blade Material | stainless steel/carbon steel |
| Warranty | 1 Year |
| After-Sales Service Provided | Online support |
| Customized Support | OEM, ODM, OBM |
| Place Of Origin | Shandong, China |
| Brand Name | Roltec |
| Model Number | 4A |
| Product Name | Air fan |
| Color | OEM |
| Motor | as request |
| Application | Exhaust Ventilation |
| Usage | High Pressure Blowing |
| Selling Units | Single item |
Product Details
































Brand | Roltec |
Purpose | Ventilation/induced draft |
Material | Carbon Steel/Stainless Steel |
Fan pressure | Low pressure fan |
Airflow direction | centrifugal type |
Voltage | 380V |
Model | 4-72 series |








A: Flow rate&Air Volume
B: Pressure
C: Purpose
D: Use environment(Temperature, atmospheric pressure)
Q. How does your factory control product quality?
A.We have quality inspection department. All blowers are running more than 3 hour before delivery to test the quality. If there is quality problem, we will produce new one.
Q. What are your terms of payment?
A. T/T 30% AS THE ADVANCE PAYMENT AND T/T 70% AFTER INSPECTION BEFORE SHIPPING.
B. 100% IRREVOCABLE L/C AT SIGHT.
Q: What kind of packing of your goods?
A: We usually provide wooden case packing for goods by sea and ply wood case packingor goods by air/express delivery. Also, we also use cartons packing with ply wood palletfor some products.
Q: How long is the delivery time?
A: Generally it is 3-5 days if the goods are in stock. Or it is 15-20 days if the goods are notin stock, it is according to quantity.But for customized products, there will be differentproduction cycles according to different needs.
Ordering and Pricing
- Minimum order quantity: 1 set
- Volume pricing:
- 1+ set: US $440 / set
- Ships from: China
- Customization: OEM and ODM accepted on qualifying volumes.
Frequently Asked Questions
What is the minimum order quantity for this factory design air blower?
The standard minimum order quantity is 1 set. 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.
Can the factory design air blower be supplied for my local voltage?
The standard configuration is 380 V. 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 Shandong Roltec Ventilation Equipment Co., Ltd., based in China. The company 2 years as a verified Alibaba.com supplier, operates its own manufacturing. Browse the full Shandong Roltec Ventilation Equipment Co., Ltd. range on HVACR Nexus.
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