Pleated Pre Air filters for HVAC G4 EN:779


Pleated Pre Air Filters are very common in HVAC and AHU system, it`s the first filter stage of airflow tunnel. Synthetic fiber pre air filters can remove 1-5um fine dust at a good efficiency of 80-95%; the synthetic pleated pre air filters made of paper frame or metal frame, filter media backed with metal mesh; the paper frame can be used in dry situation and metal frame can be used in humidity environment.

The pleated air filters G3 G4 efficiency should be replaced every 3 to 6 month, we don`t recommend to wash the filters, a washed pre air filters cannot performance as well as the new one. Filter media are pleated by machine so enlarged the filter area, reducing pressure drop and the same time increase airflow rate. The pleated V slot can help collect fine dust.

The filter size can be customized, thickness is 8mm, 21mm, 46mm, 50mm, 69mm and so on, the iron bone design also available.


1. light weight

2. economic price

3. envrionment friendly

4. good efficiency and large dust holding ability

5. there are standard airflow and higher airflow choice.


Specifications and Details
Efficiency G3 and G4 EN:779
Filter depth 21mm - 46mm -- 96mm available
Filter media Synthetic fiber
Frame material Gal or Al alloy or cardboard
Grille Metal mesh
Customized size Available
Design Panel
Max Operating Temperature 175˚F (79˚C)

Tech Data

Item No Size(mm) Air flow rate Pressure drop Efficiency Filter Area
EA-PW-252 295*595*21 950m³/h 80Pa G4 EN:779 0.3m²
EA-PW-442 495*495*21 1300m³/h 80Pa G4 EN:779 0.4m²
EA-PW-452 495*595*21 1600m³/h 80Pa G4 EN:779 0.5m²
EA-PW-552 595*595*21 1900m³/h 80Pa G4 EN:779 0.6m²
EA-PW-254 295*595*46 950m³/h 50Pa G4 EN:779 0.5m²
EA-PW-444 495*495*46 1300m³/h 50Pa G4 EN:779 0.6m²
EA-PW-454 495*595*46 1600m³/h 50Pa G4 EN:779 0.7m²
EA-PW-554 595*595*46 1900m³/h 50Pa G4 EN:779 1m²
EA-PW-259 295*592*96 950m³/h 40Pa G4 EN:779 0.9m²
EA-PW-449 495*495*96 1300m³/h 40Pa G4 EN:779 1.2m²
EA-PW-459 495*595*96 1600m³/h 40Pa G4 EN:779 1.5m²
EA-PW-559 595*595*96 1900m³/h 40Pa G4 EN:779 1.7m²

Customized size is available, air pressure drop ± 15% around;