AHU Pre Filter

  • High dust-holding capacity with larger surface area
  • Optimized design and lightweight for high-performance
  • Sturdy structure to withstand maximum airflow
  • Customized service to fulfill any specific requirements
  • Low-pressure drop realizes energy efficient
  • Reliable quality in line with ISO, EN, and UL certifications

Filson utilizes quality and high loft filter media to increase dust holding capacity, hence it is capable of doing an excellent job as a pre-filter. In order to protect and extend lifetime of fine filter, its job is to capture larger particles such as coarse, hair, dust, etc.


  • Filter media: glass fiber, polyester, polypropylene, cotton, etc
  • Frame material: rigid water-resistant cardboard, plastic, metal
  • Filter Grade: G3, G4, F5
  • Dimensions: Dimensions: 24”x24”, 20”x20”, 12”x24”, 12”x12”, etc
  • Standard depth: 48 mm – 101 mm
  • Initial Pressure Drop: 47 Pa
  • Final Pressure Drop: 250 Pa
  • Color: white, blue
  • Standards: EN 779, ISO, UL, DIN
  • Humidity Resistance: 100%
  • Average Arrestance: 80%, 95%

Note: the above sheet is for reference purposes, please contact us for custom sizes.

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Filson AHU Pre Filter

Sturdy, Economical Performance and Ease of Use

Filson AHU pre-filter features with robust structure as media is bonded to a metal support grid without air by-passing, which certainly improves its safety and filtration efficiency. With high resistance to corrosion and humidity, it is workable in harsh environments.

Thanks to compact and uniform pleats, the filtration surface area of the Filson AHU pre-filter increases about 3 times, which means it can handle higher air volumes with low-pressure loss. So it is an ideal choice to save energy and running costs.

There are three typical filters used for AHU systems: primary air filter, secondary air filter, and high-efficiency air filter. Filson AHU pre-filter belongs to the primary air filter. But if you need other types of filters, as the expert in filtration, we have the ability to offer every filter for you.

Click Here to know more information of Filson AHU filters, our friendly sales are here for you 24/7!

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