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New Product of the 2019 – Flat Access Door

Ningbo Aier Ventilation Equipment Co., Ltd has recently launched another type of its access door series for the ventilation ducts – Flat Access Door.

What is Flat Access Door?

 Flat Access Doors are designed to provide inexpensive and trouble free access to the rectangular air ducts for ducts cleaning and maintenance. The flat access doors are made out of hot-dipped spangle-free galvanized steel (Dx51D+Z275) with polyurethane as the gasket.

Flat Access DoorAdvantages of Flat Access Door?


  • Our flat access doors are anti-corrosion and rust-proof – zinc coated Z275 (16-22 µm);
  • Our innovative handle design allows our flat access doors to be pushed and pulled instead of managed by twisting a knob when installed on the duct. This makes handling the access doors much easier.
  • Last but not least, the polyurethane gasket on the flat access doors greatly improves the air tightness because the polyurethane gasket has a greater density and better resilience.


The flat access doors were developed right after the samples of the maintenance access doors were approved by our customers. During the development of our flat access doors, we have made 3D drawings, opened molds, produced samples, etc. Thanks to our many years of experience in developing and producing maintenance access doors, we were able to make 3 prototype flat access doors of different sizes in just 30 days. We were very glad that our customers were satisfied with the samples and made a quick decision to place the trial orders with us shortly after.

Ningbo Aier Ventilation is always dedicated to offering superior products and better service to our customers. Besides the flat access doors, we have already developed and perfected curved access doors, maintenance access doors, rectangular access doors and tabbed access doors to meet the various demands and specifications of our customers. And we will continue to develop innovative solutions and manufacture high quality products.


Please visit our Access Door page for detailed information.


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