air diffuser

Hvac System Ventilation Aluimunum Air Supply Ceiling Round Air Diffusers Factory RD-A1

Round ceiling diffuser, also named round air diffuser, round ceiling vent, Round duct supply diffuser grille provides air deflections in 360 direction the diffuser rings, is the most common one in the hvac industry.

Product Specification:
  • Material : Aluminum
  • Finished : Powder coated or anodized
  • Color : White Ral9016/9010
  • Function : Ventilate
  • Size : Customized
  • Material thickness : 1.0mm thick
  • Accessory : OBD / Air Filter / Air Damper
Product Details

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  • Frame & Inner Core: High quality extruded aluminum alloy(A6063) sheet.


  • The frame and blades are constructed with high quality extruded aluminum profiles, which have the advantages of corrosion resistance and rigidity.
  • The inner core fixed centrally to the frame. Inner core can be easily removed and fixed by one side with aluminum pin and the other with steel spring. This removable structure provides easy installation, maintenance and access to the duct.
  • The flow mode can be adjusted for horizontal flow by expanding the cone or vertical flow by shrinking the cone.
  • It can be used for ceiling or exposed pipe installation, especially when installation requires an adjustable mode.

Surface Finish:

  • Powder coated color finish as per RAL color
  • standard color: RAL9016, 9010
  • Natural anodized aluminum finish

Material thickness:

  • 1.2mm

round ceiling air diffuser


  • Any size available
  • Over face size= Neck size +150mm
Item code Neck Size=A(mm) Face Size=C(mm)   B (mm)
RD-A1-80 80 230 170
RD-A1-100 100 250 190
RD-A1-150 150 300 240
RD-A1-230 230 380 320
RD-A1-250 250 400 340
RD-A1-300 300 450 390
RD-A1-350 350 500 440
RD-A1-380 380 530 470
RD-A1-450 450 600 540
RD-A1-500 500 650 590

circular air diffuser

round air diffuser vent

hvac grilles and diffusers

   Foshan Vairtech Ventilation Co., Ltd. is the leading manufacturer of ventilation products & air conditioning diffusers and accessories with more than 20 years experience. Now Vairtech is one of leading brands in China.Our company is located in the aluminum hometown of China, Nanhai,Foshan, Guangdong, which enjoys the transportation and raw material convenience.

   We are engaged in R&D of our products, air diffusers, air grilles, air vents, air dampers, flexible ducts, access panels and so on. Now, our products are well sold to more than 150 countries with praise for the great structures, various styles, nice appearance and high quality.

   To meet the new age of globalization, we accelerate the pace of development to make more new products and provide better service to our customers. "Customer first, Quality first"-we are sincerely welcome you to contact us for business.

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  We started to participate in different exhibitions in 2016, and until now, we still insist on participating in exhibitions.

  On the one hand, to let more people know our brand Vairtech, so that Vairtech has more opportunities to show; On the other hand, face-to-face communication can deepen customers' understanding of Vairtech.At the same time, customers can directly contact our products and have a certain cognition of the quality and service of our HVAC ventilation products.

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   To date, Vairtech has exported many ventilation products to more than 150 countries and received a lot of feedback from our customers. As shown in the following figure, slots diffuser, disk valve and other feedback. In fact, not only products, our salesman's service is also appreciated by customers.
   Of course, if you receive the product you are not satisfied with the place, welcome to contact us,we will try our best to solve for you. Thank you for your trust and support. I hope we can have a good cooperation opportunity to start.

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According to Vairtech products, you can choose different packaging methods:

  • Internal pvc separate packaging.
  • Outer strong carton packing.
  • Additional pallets and wooden cases are optional.
  • If necessary, special packing can be used.

For specific requirements, please contact the salesman.   

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Q:Are you a manufacturer or trading company?

We are professional manufacturer in China,and have been in this field for 20+ years.   
We have professional staff, experienced designers and responsible inspectors to serve you, hoping to achieve a win-win situation.


Q:What products do you mainly produce?

A: We are focus on producing hvac ventilation air grilles, ceiling air diffusers, air vent covers, air dampers & accessories, flexible ducts, access panels,air conditioning accessories and so on.


Q: I have a project, but I don't know which product is suitable, can you recommend for me?

A: You can send the drawings to us, we have professional engineers to answer your questions and recommend suitable products.  We have one-stop procurement, please feel free to send your requirements to us.


Q:Can you change the design of this product?

A: Of course,you need to provide more pictures and information to us as much as possible.  We have
experienced designers who are specially responsible for it, and can perfectly restore the design you want.


Q:I like this product very much, but the freight is too high.What's the solution?  

  • A: If you have a forwarder in China, we can ship the goods to your forwarder.
  • A: If you buy other products from other companies in China, you can share the container with our products.
  • A: It is more cost-effective to buy in bulk.  If you are worried about the quality, you can place a sample order first.


Q:How can I get a quotation from you ?

A:You can leave us a message and we will reply to each of your messages as soon as possible. Thank you for your waiting and support. You can also find our contact information on the contact page.


Technical Support: Magic Lamp