Features of Aosun Stainless Steel Air Curtain
- The 304/316 stainless steel body can be used for a long time in high-humidity, coastal and chemical environments.
- Smooth surface without holes, allowing for quick removal of contaminants
- The structure is stable and can operate continuously in harsh environments, with a long service life.
- The overall stainless steel body has a smooth texture and simple lines, enhancing indoor comfort and reducing energy consumption.
- The high-speed airflow forms an invisible air barrier, effectively blocking hot and cold air, dust and insects.
Aosun | Professional Stainless Steel Air Curtain Manufacturer in China
Aosun stainless steel air curtain can ensure hygienic operation of commercial kitchens and food processing facilities, effectively preventing grease accumulation, flying insects, and cross-contamination at critical entry points. As one of the most demanding environments for sanitation standards, commercial kitchens need to provide seamless access for staff and equipment while maintaining solid protection against airborne pollutants and temperature fluctuations. Our stainless steel air curtain device can continuously maintain this protective barrier. It can stabilize indoor temperature, control humidity and reduce air leakage, and most importantly, it can significantly reduce the excessive energy consumption of HVAC systems caused by frequent door opening and closing. In addition to standard commercial kitchens, it is also widely used in food factories, cold storage entrances, supermarket doorways, and coastal commercial buildings. Our stainless steel air curtain device complies with CE, UL, ETL and RoHS standards, which can ensure stable performance in harsh, corrosive, and high-humidity environments. You can also customize the air curtain with 304 or 316 stainless steel housing, specific lengths, and control options to meet the exact installation requirements of your project.

Installed within the ceiling, it achieves seamless interior decoration while forming an invisible air barrier.

Built-in heating elements provide warm air flow, preventing cold air from entering. It is highly suitable for stores in cold climates.

Standard air barrier device designed for supermarkets, restaurants and retail stores. It can save air conditioning energy consumption and prevent insect invasion.

A high-volume and heavy-duty air curtain with powerful wind output. Specifically designed for large warehouses, factories and loading docks entrances.

Hygienic 304 stainless steel casing can resist moisture and grease, which makes it the mainstream hygienic choice for kitchens and regular food processing sites.

High-quality 316 stainless steel structure, with excellent resistance to salt spray and chemical corrosion. It is suitable for coastal buildings and corrosive industrial workshops.
What is a Stainless Steel Air Curtain?
Stainless steel air curtain is a high-performance air barrier device. Its outer shell is made of corrosion-resistant stainless steel. The high-speed airflow it generates forms a hidden barrier at the entrance of the door. Different from ordinary steel or plastic shell air curtain, stainless steel air curtain has better durability, hygiene and aesthetics. This makes it the preferred choice for environments with high requirements for performance and appearance.
Why Choose Stainless Steel Air Curtains?

Better Corrosion Resistance
The stainless steel air curtain can be used for a long time in harsh environments. Its surface can form a very thin, strong, fine and self-repairing chromium-rich oxide film, thereby protecting the internal components from rusting and damage. This makes them highly suitable for coastal areas, high humidity environments and chemical environments.
Easy to Clean
Stainless steel has a smooth and pore-free surface for quick cleaning. This is crucial for industries with strict hygiene standards. You only need simply wipe it to remove grease, dust and contaminants, and there will be no peeling of paint or surface depressions. Therefore, stainless steel air curtains are widely used in restaurants, kitchens, food processing workshops and other scenarios.
Longer Service Life
Stainless steel air curtains have stronger structural stability and environmental adaptability. They are not easy to appear shell deformation, corrosion penetration and component aging under the influence of long-term high-intensity operation and harsh environment. Their service life is several times that of ordinary air curtains, which significantly reduces the frequency of equipment maintenance, repair and replacement.
High-Quality Appearance
The integrated stainless steel body presents a smooth metallic texture, with simple lines and no excessive decorations. It avoids the aging problems such as paint peeling and color fading that commonly occur in air curtains over time, maintaining a neat and high-end appearance that can enhance the overall grade and image of the application site.
Application of Stainless Steel Air Curtain

Commercial Kitchen
There are persistent problems in the restaurant’s kitchen, such as long-term accumulation of smoke, obvious temperature differences between indoor and outdoor areas, and frequent entry and exit of flying insects. The stainless steel air curtain forms a stable airtight barrier at the kitchen entrance, effectively preventing the spread of internal smoke to the dining area. It also can prevents pests like mosquitoes and flies from entering the kitchen and maintain a clean dining environment.
Food Processing Plant
The food processing plant has extremely strict hygiene requirements, which needs to undergo frequent daily cleaning and disinfection. Ordinary air curtains are prone to accumulate dirt and bacteria and cannot meet the production standards. However, stainless steel air curtains have a completely clean outer shell, which is suitable for frequent rinsing and disinfection operations. They can effectively prevent external dust, bacteria and contaminants from entering the workshop, ensuring the cleanliness of the food production environment.
Refrigeration Warehouse Entrance
When goods and personnel enter or exit the refrigeration warehouse, there will be serious problems of cold air loss and external hot air infiltration, which will lead to an increase in cooling energy consumption and the formation of condensation water and frost at the entrance. The stainless steel air curtain forms a high-speed air barrier that tightly closes the doorways of the refrigeration warehouse, effectively isolating the internal cold air and external hot air, reducing the loss of cold energy, avoiding frequent frosting and defrosting, and thereby lowering the operating energy consumption of the refrigeration warehouse equipment.
Coastal Areas
The coastal areas are constantly exposed to sea winds and salt fog throughout the year. Ordinary air curtain equipment is prone to rust and damage, leading to equipment failures and frequent replacements. However, the 304/316 stainless steel material used in our air curtain has extremely strong salt fog resistance and can withstand long-term sea wind erosion. It can maintain the stable operation of the equipment in the high humidity and high salt content environment of coastal areas, thereby reducing maintenance and replacement costs for commercial buildings, resorts, and waterfront industrial parks in the coastal regions.
How to Choose the Right Stainless Steel Air Curtain?
When choosing a suitable stainless steel air curtain, you need to consider the door parameters, installation environment and functional requirements comprehensively to ensure the best usage effect.
Measure Door Width
You need to match the length of the air curtain according to the actual width of the door. Make sure the length of the air curtain can fully cover the entire door width to ensure a complete isolation effect and avoid any blind spots in the airtight area. For extremely wide door openings, you can use multiple air curtains in combination.
Installation Height
The installation height of the equipment directly determines the required wind speed and air flow. The higher the installation height, the higher the required wind speed. This ensures that the airflow can reach the ground steadily, thereby forming a complete airtight barrier. For different installation heights, you need to select air curtains with different air volumes to avoid the failure of the isolation effect.
Environmental Conditions
You need to select the materials based on the actual application environment. For regular damp, oily and commercial cleaning environments, we recommend you to choose 304 stainless steel. For coastal salt spray, chemical corrosion and highly humid environments, we suggest you choose the upgraded 316 stainless steel to enhance the durability of the equipment.
Control Method
Air curtain has a variety of control methods, including manual control, remote control and linkage switch control. The linkage switch is the most energy-efficient option, which can reduce unnecessary power consumption. You can choose the most suitable one according to your needs to adapt to different operation scenarios.
Why choose Aosun Stainless Steel Air Curtain?
As a professional manufacturer of stainless steel air curtains, Aosun has over 10 years of experience in air curtain production. Our factory is equipped with multiple standardized production lines, which can support both large-scale production and customized production. We strictly control quality to ensure that each air curtain provides stable, durable and efficient performance. Moreover, Aosun offers flexible OEM and ODM customization services to meet the individual size, parameters and functional requirements of different customers. With mature global export experience, our products are sold in numerous countries and regions around the world. Aosun provides one-stop air curtain solutions for global customers.
Commercial stainless steel air curtains are usually made of 304 or 316 stainless steel. 304 stainless steel is sufficient for most kitchen and food factory environments. 316 stainless steel has stronger resistance to salt fog and chemical corrosion, making it an ideal choice for coastal and chemical environments.
Sure. 304 stainless steel can withstand ordinary humid environments. For areas with salt spray from the sea, 316 stainless steel is the preferred choice. 316 stainless steel is resistant to corrosion from seawater salt and is less prone to rust and damage. Combined with a waterproof motor structure, it prevents moisture from entering the internal components.
The equipment forms an invisible air barrier through high-speed airflow, preventing the convection of hot and cold air between indoors and outdoors. The stainless steel body is not prone to deformation or air leakage, and the wind curtain has stable sealing performance. Long-term use reduces the load on the air conditioner and lowers electricity costs.
We suggest that you wipe the outer shell with a neutral cleaner every month to remove oil stains and dust. Regularly clean the intake grille to prevent blockage. Check if the fan is running smoothly. Avoid using strong acids or strong alkalis to prevent damage to the stainless steel surface.
Air volume has decreased: Clean the filter and the fan blades.
Abnormal noise: Check the bearing lubrication or tighten loose screws.
Unable to start: Check the power supply and switch connections.
Most faults can be avoided through regular cleaning and maintenance. For complex issues, it is recommended that you contact professional technicians.
First, you need to fix the equipment horizontally above the door. The length should be equal to or slightly larger than the width of the door. Then you need to ensure that the installation bracket is secure and stable. Finally, you should connect the power supply. To ensure safety and effectiveness, it is best to be installed and debugged by qualified professionals.
It’s not necessary. For ordinary shops and offices in dry environments, you only need to use standard material air curtain. However, in high-fume kitchens, high-humidity cold storage facilities, food factories and coastal buildings, stainless steel has the characteristics of corrosion resistance and easy cleaning. This makes it becomes an indispensable choice.
The service life of 304 or 316 stainless steel air curtain can usually reach 10 to 15 years, which is longer than the air curtain of ordinary material. Its excellent corrosion resistance and structural strength significantly makes it reduce the frequency of replacement and maintenance. As long as you use it properly and maintain it regularly, the stainless steel air curtain can operate continuously for many years.
Yes. Regular manufacturers usually provide core components such as fans, motors, control boards, and blades. It can ensure the continuous operation of the equipment throughout its entire lifecycle. Choosing a manufacturer with a well-established supply chain can help you avoid the risk of downtime caused by component shortages.
Common export certifications include CE, UL,ETL, and RoHS. Additionally, different countries and regions may have specific certifications, such as SASO of Saudi Arabia, SAA of Australia, INMETRO of Brazil. Before purchasing, you should ensure that the product complies with the local electrical safety and energy efficiency standards.




