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Synthetic Fiber Flat Panel Filter

Short Description:

Using special low-resistance and high-throughput non-woven fabrics as the filter material has a high dust holding capacity.

Product Detail

Product Tags

Frame:  Rigid high wet-strength beverage board, Galvanized sheet metal or Extruded anodized Aluminum profile, 46mm、25mm、20mm、15mm、10mm

Media:  Non-woven reinforced cotton &synthetic media or Synthetic fiber

Faceguard:  Aluminum mesh or coated mesh

Efficiency: G3 (EN779) Avg. arrestance 80%

G4(EN779) Avg.arrestance90-95%,>95@(≥5um)

Temperature:   ≤70℃  Humidity : ≤100%RH

Recommended Max. Final Pressure drop  :  ≤250Pa

Applications:  pre filter for commercial & industrial ventilation system to protect high-performance filters, Clean room MAU and AHU system, Hotel and office building

Synthetic Fiber Flat Panel Filter    







Airflow. Pressure drop(m3/h.Pa)






























































Air pre-filters are usually used for non-critical applications. There are a number of different types of pre-filters available, all of which have varying benefits. Our ranges of air pre-filters include Synthetic Fiber Flat Panel Filters, Pleated Primary Filters, Pocket Primary Filters, V-form extended surface panel filters and Grease Metal Panels Filters.

detail (1)

Synthetic Panel Pre air filters G3 G4 EN:779

Panel pre filters made of synthetic & cotton fiber, this kind of filter media can remove particles size about 0.5um with efficiency from 50% to 90%, the synthetic fiber filter can block large dust and collect it. This process is very important in normal HVAC system and clean room air system. As the panel pre filters already filter large dust, the second filters and third filters have no more heavy burden for the large dusts.

Filter panel pre filters thickness can be 21mm, 46mm if the frame is aluminum alloy, filter media thickness can be 10mm, 20mm, 30mm and 40mm; 21mm aluminum alloy with 20mm filter media is the common design, the synthetic filter media is designed with electrostatic absorption ability, this design can help absorb fine dust easily.

Other frame such as corrugated paper, and thickness and length, width available, the corrugated paper frame is waterproof and can be used in moist environment for a long time.

Change the pre panel filters frequently can enlarge pocket filters and HEPA filters service life, the pre panel filters cannot be washable. If wash the filter media, the inside construction may be destroyed. This also can be used as fan coil filters.

Application: the pre filters for HVAC system in pharmaceutical, food process, hospital, library and other commercial buildings.

Specifications and Details

Efficiency G4 EN:779
Filter depth 21mm, 25mm and 46mm
Filter media Synthetic fiber
Frame material Aluminum alloy or gal
Grille Non
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-PP-252G3 295*595*21 1000m³/h 35Pa G3 EN:779 0.17m²
EA-PP-442G3 495*495*21 1400m³/h     35Pa G3 EN:779 0.25m²
EA-PP-452G3 495*595*21 1700m³/h 35Pa G3 EN:779 0.29m²
EA-PP-462G3 495*625*21 1750m³/h 35Pa G3 EN:779 0.31m²
EA-PP-552G3 595*595*21 2000m³/h 35Pa G3 EN:779 0.35m²
EA-PP-252G4 295*592*21 1000m³/h 60Pa G3 EN:779 0.17m²
EA-PP-442G4 495*495*21 1400m³/h 60Pa G3 EN:779 0.25m²
EA-PP-452G4 495*595*21 1700m³/h 60Pa G3 EN:779 0.29m²
EA-PP-462G4 495*625*21 1750m³/h 60Pa G3 EN:779 0.31m²
EA-PP-552G4 595*595*21 2000m³/h 60Pa G3 EN:779 0.35m²

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

Synthetic Fiber Flat Panel Filter

1.product Features and applications


 ● Used for catching particles, dust and various suspended objects

 ● Washable , Replaceable filter media

 ● High strength, large air volume, small resistance, high capacity of dust

 ● mainly used to filter the particle size of 5um and above


Used as first stage filters in air condition system.such as: Clean rooms ,Food processing industry, Pharmaceutical Processing and so on.

Product Details

 Thickness :20mm


 Dimension(L*W*H): Standard Size

 Weight: 1-10kg

 Certification: ISO9001:2008

 Usage: Widely Used Dust Filter

 Business Type: Manufacturer

 Frame: Aluminum Frame

 Media: Synthetic Fiber

 Size: Can be Customized

 Type: PRE Filter

detail (2)

Pleated synthetic fiber 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;

Pleat Synthetic Fiber Panel Filters

Application: Filter dust, pre-filter through air filter program

Type: synthetic fiber foldaway filter

Frame: aluminum, paper or galvanized

Media: synthetic fiber

Protect mesh: aluminum net or stainless steel

net EN779 class:G2, G3,G4,F5

Average arrestance:84%-90%(ASHRAE52.1-1992) EUROVENT4/5 class: EU3,EU4,EU5 DIN53438 Non-flammability Standard: F1

Final resistance: (suggested) 200Pa-250Pa

Max. air flow: 125% of the rated air flow

Temp. resistance: 100℃


The panel filter is well suited to be as the pre-filter for the air-take- in sytstem and exhaust system of the air handling units or general ventilations system or the factories for purification.


Pleated paper panel filter in pleating, Z line;

Stong structure with low pressure;

Easy for installation and disposal;

Temperature resistance up to 80;

Moistrue-resistant up to 100%;

Produced to customer's specification.

Frame Work

Polyester/cotton blend with expanded metal grid, and the flame is waterproof cardboard;

Our air panel Filters are available in standard and custom sizes. They’re suitable for both residential and commercial applications.

The panel air filter will work well when used in non-critical applications, such as a pre filter.

The Panel Filter has a rugged galvanised steel frame that encloses the filter media between two pieces of galvanised mesh. We also supply an aluminium-framed version of our Panel Filter.

The filter media is available in a G4 rating and is manufactured from bonded synthetic fibres. Other efficiencies are also available upon request.

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