Coarse Air Filter: First Line of Defense, Dust-Free Performance

The coarse air filter is designed to capture large particulate contaminants (≥ 5 μm), such as dust, pollen, and debris. This effectively prevents the accumulation of dust and contamination inside the system, protects downstream filters – including medium-efficiency and HEPA filters – as well as other equipment components, and extends their service life.

  • Captures particles ≥ 5 μm
  • Versatile structural designs: panel type, bag type
  • Some models are washable and reusable
  • Compliant with EN 779:2012 standard
Four types of coarse air filters in different materials and structures
Filter Materials
Multiple layers of coarse air filter material made of polyester synthetic fiber stacked together
Polyester Synthetic Fiber

Polyester synthetic fiber is a common non-woven material with uniform structure, stable filtration efficiency, low resistance, and high dust-holding capacity. It is widely used in pre-filters (coarse air filters).

A roll of white coarse air filter material made of DPA synthetic fiber
Punched Synthetic Cotton

Punched Synthetic Cotton is a dual-layer progressive synthetic material designed with a composite structure of coarse and fine fibers. It achieves a balance between high dust-holding capacity and low initial resistance.

A single piece of coarse air filter material made of metal mesh
Metal Mesh

Metal mesh is typically woven from aluminum or galvanized steel wire, offering good mechanical strength and the advantage of being washable and reusable.

A sheet of black coarse air filter material made of nylon mesh
Nylon Mesh

Made from high-strength polyamide fibers, nylon mesh features excellent corrosion resistance, strong moisture resistance, easy cleaning, and reusability.

Coarse Panel Air Filter
Features
  • Compact structure, easy installation. The flat rectangular design minimizes space requirements and simplifies installation/replacement.
  • Uniform filtration area, well-distributed airflow. It ensures stable filtration efficiency and is ideal for low airflow and low-load systems.
  • Cost-effective, suitable for mass use. Especially well-suited for coarse filtration applications, such as pre-filtration in central air conditioning and ventilation systems.
  • High adaptability: Dimensions can be customized to meet system requirements, ensuring excellent compatibility.
Applications
  • Central air conditioning air supply systems in shopping malls, hospitals, and similar environments.
  • Centralized ventilation systems for general industrial facilities
  • Pre-filtration for dedicated outdoor air systems in cleanrooms
The front view of coarse air filter with mesh-covered outlet

Coarse panel air filter

The side view of coarse air filter with mesh-covered outlet

Side

Coarse air filter with mesh-covered outlet details display

Details

Coarse air filter with mesh-covered outlet

Mesh-covered

The front view of coarse air filter with mesh-covered outlet

Coarse panel air filter

The side view of coarse air filter with mesh-covered outlet

Side

Coarse air filter with mesh-covered outlet details display

Details

Coarse air filter with mesh-covered outlet

Mesh-covered

Specifications
  • Frame material: Galvanized, aluminum alloy, stainless steel, plastic, stiffened cardboard
  • Mesh material: Galvanized and stainless steel
  • Filter media: Specially designed high-flow, low-resistance polyester synthetic fiber media
  • Filtration grade: G3-G4
  • Reference standard: EN 779:2012
A flat structural diagram of coarse panel air filter

Coarse panel air filter structural diagram

Initial pressure drop and airflow performance curve of coarse panel air filter

Initial pressure drop and airflow performance curve

Table 1: Coarse Panel Air Filter Specifications
Model Overall Dimensions (W × H × D) Filtration Area Rated Airflow Initial Pressure Drop
mm m³/h Pa
JAFGP-1221 290 × 595 × 21 0.40 1200 65
JAFGP-1621 490 × 490 × 21 0.56 1600 65
JAFGP-1746 290 × 595 × 46 0.79 1700 72
JAFGP-1795 290 × 595 × 95 1.28 1700 70
JAFGP-1921 490 × 595 × 21 0.65 1900 65
JAFGP-2421 595 × 595 × 21 0.83 2400 65
JAFGP-2446 490 × 490 × 46 1.12 2400 72
JAFGP-2495 490 × 490 × 95 1.73 2400 70
JAFGP-2846 490 × 595 × 46 1.36 2800 72
JAFGP-2895 490 × 595 × 95 2.09 2800 70
JAFGP-3446 595 × 595 × 46 1.64 3400 72
JAFGP-3495 595 × 595 × 95 2.55 3400 70
Note: Special specifications can be customized
Coarse Flat Panel Air Filter
Features
  • Ultra-thin & lightweight. Filter element thickness is typically 10 mm or 25 mm, making it lightweight and suitable for systems with limited installation space.
  • Low initial resistance, minimal air resistance. Suitable for low energy consumption operations, improving the overall energy efficiency ratio of air conditioning systems.
  • Excellent cost control: Simple structure, low manufacturing cost, a preferred choice for cost-effective projects.
Applications
  • Central air conditioning air supply systems in shopping malls, hospitals, and similar environments.
  • Centralized ventilation systems for general industrial facilities
  • Pre-filtration for dedicated outdoor air systems in cleanrooms
A coarse flat panel air filter

Coarse flat panel air filter

Specifications
  • Frame material: Galvanized, aluminum alloy, stainless steel
  • Mesh material: Galvanized, aluminum alloy, stainless steel
  • Filter media: Specially designed high-flow, low-resistance polyester synthetic fiber media
  • Filtration grade: G3-G4
  • Reference standard: EN 779:2012
A structural diagram of coarse flat panel air filter

Coarse flat panel air filter structural Diagram

Initial pressure drop and airflow performance curve of coarse flat panel air filter

Initial pressure drop and airflow performance curve

Table 2: Coarse Flat Panel Air Filter Specifications
Model Overall Dimensions (W × H × D) Filtration Area Rated Airflow Initial Pressure Drop
mm m³/h Pa
JAFGF-1710 290 × 595 × 10 0.17 1700 50
JAFGF-1715 290 × 595 × 15 0.17 1700 46
JAFGF-1720 290 × 595 × 20 0.17 1700 42
JAFGF-1725 290 × 595 × 25 0.17 1700 38
JAFGF-2810 490 × 595 × 10 0.29 2800 50
JAFGF-2815 490 × 595 × 15 0.29 2800 46
JAFGF-2820 490 × 595 × 20 0.29 2800 42
JAFGF-2825 490 × 595 × 25 0.29 2800 38
JAFGF-3410 595 × 595 × 10 0.35 3400 50
JAFGF-3415 595 × 595 × 15 0.35 3400 46
JAFGF-3420 595 × 595 × 20 0.35 3400 42
JAFGF-3425 595 × 595 × 25 0.35 3400 38
Note: Special specifications can be customized
Non-woven Bag Filter
Features
  • Stable filtration efficiency. High dust holding capacity, with coarse efficiency up to G3-G4 grade.
  • Robust construction. The filter bag utilizes ultrasonic heat sealing or stitching technology for enhanced durability and resistance to deformation.
  • Economical and practical. Low cost, suitable for use as a pre-filter in most general ventilation systems.
  • Extended downstream filter service life. Effectively captures larger particulate contaminants, protecting medium and high efficiency filtration stages.
Applications
  • Shopping malls, hospitals, and other public service areas
  • Central ventilation systems in electronics and biopharmaceutical industrial plants
  • Fresh air and air-conditioning filtration systems for cleanrooms
A white non-woven bag filter with galvanized steel frame

Non-woven bag filter

Specifications
  • Frame: Galvanized sheet, aluminum alloy, stainless steel
  • Filter media: Specially designed polyester synthetic fiber filter material
  • Filtration grade: G4
  • Standard: EN 779:2012
Top and side view plan drawings of non-woven bag air filter

Non-woven bag filter structural diagram

Initial pressure drop and airflow performance curve for G3 and G4 grade non-woven bag air filters

Initial pressure drop and airflow performance curve

Table 3: Non-woven Bag Air Filter Specifications
Model Overall Dimensions (W × H × D) Number of Bags Filtration Area Rated Airflow Initial Pressure Drop (Pa)
mm m³/h G4
JAFGNB-183381 287 × 592 × 381 3 1.6 1800 60
JAFGNB-273600 287 × 592 × 600 3 2.5 2700
JAFGNB-275600 490 × 592 × 600 5 4.2 2700
JAFGNB-305381 490 × 592 × 381 5 2.3 3000
JAFGNB-366381 592 × 592 × 381 6 3.3 3600
JAFGNB-546600 592 × 592 × 600 6 5.0 5400
Note: Special specifications can be customized
Synthetic Fiber Bag Filter
Features
  • Enhanced durability. It utilizes anti-breakage synthetic fiber filter media with excellent tensile strength, ensuring long-term use without damage.
  • Low pressure drop design. The material structure is loose and orderly, reducing initial resistance while maintaining efficiency and improving energy savings.
  • Eco-friendly and safe. Free from glass fibers, no dust shedding, providing safer and more environmentally friendly use
Applications
  • Shopping malls, hospitals, and other public service areas
  • Central ventilation systems in electronics and biopharmaceutical industrial plants
  • Fresh air and air-conditioning filtration systems for cleanrooms
A synthetic fiber bag filter

Synthetic fiber bag filter

A synthetic fiber bag filter back

Back

Synthetic fiber bag filter frame display

Details

A synthetic fiber bag filter

Synthetic fiber bag filter

A synthetic fiber bag filter back

Back

Synthetic fiber bag filter frame display

Details

Specifications
  • Frame material: Aluminum alloy, stainless steel, galvanized steel sheet
  • Filter material: Specially engineered high-flow, low-resistance synthetic fiber fabric filter media
  • Filtration grade: G3-G4
  • Test standard: EN 779:2012
Top and side view plan drawing of synthetic fiber bag filter

Synthetic fiber bag filter structural diagram

Table 4: Chemical Fiber Bag-Type Air Filter Specifications
Model Overall Dimensions (W × H × D) Number of Bags Filtration Area Rated Airflow (m³/h) @ Initial Pressure Drop (Pa)
mm G3 G4
JAFGSB-313 287 × 592 × 300 3 1.3 1700 63 1700 68
JAFGSB-316 287 × 592 × 381 1.6 49 54
JAFGSB-323 287 × 592 × 550 2.3 33 38
JAFGSB-325 287 × 592 × 600 2.5 30 35
JAFGSB-417 287 × 592 × 300 4 1.7 1700 47 1700 52
JAFGSB-421 287 × 592 × 381 2.1 37 42
JAFGSB-430 287 × 592 × 550 3.0 24 29
JAFGSB-432 287 × 592 × 600 3.2 22 27
JAFGSB-518 490 × 490 × 300 5 1.8 2550 69 2550 74
JAFGSB-523 490 × 490 × 381 2.3 53 58
JAFGSB-533 490 × 490 × 550 3.3 35 40
JAFGSB-535 490 × 490 × 600 3.5 33 38
JAFGSB-626 592 × 592 × 300 6 2.6 3400 63 3400 68
JAFGSB-649 592 × 592 × 381 3.3 49 54
JAFGSB-633 592 × 592 × 550 4.7 33 38
JAFGSB-630 592 × 592 × 600 5.0 30 35
JAFGSB-734 592 × 592 × 300 7 3.4 3400 47 3400 52
JAFGSB-742 592 × 592 × 381 4.2 37 42
JAFGSB-761 592 × 592 × 550 6.1 24 29
JAFGSB-765 592 × 592 × 600 6.5 22 27
Note: Special specifications can be customized
Nylon Mesh Filter
Features
  • Low initial resistance and excellent ventilation. The nylon mesh features a relatively large pore size, resulting in low air resistance. It is suitable for coarse filtration and helps maintain stable system airflow.
  • Reusable after cleaning. The filter mesh can be washed with water or cleaned with a vacuum cleaner, offering convenient maintenance and reducing long-term replacement costs.
  • Moisture and mildew resistant. Nylon material is not easily absorbent, making it suitable for high-humidity environments and preventing filter media from becoming moldy or deteriorated.
Applications
  • Refrigeration and air conditioning products and equipment
  • Engineering dust filtration
  • Air purifiers and air purification treatment equipment
A nylon mesh air filter constructed with a stainless steel frame and nylon fiber filter material

Nylon mesh filter

Specifications
  • Frame material: Aluminum alloy, stainless steel, galvanized steel sheet
  • Filter material: Made from nylon fiber woven filtration media
  • Filtration grade: G3-G4
  • Test standard: EN 779:2012
A structural drawing of nylon mesh air filter with external dimensions

Nylon mesh filter structural diagram

Initial pressure drop and airflow performance curve of nylon mesh air filter

Initial pressure drop and airflow performance curve

Table 5: Nylon Mesh Air Filter Specifications
Model Overall Dimensions (W × H × D) Rated Airflow Initial Pressure Drop Filtration Area
mm m³/h Pa
JAFNN-540 500 × 500 × 5 4000 12 0.25
JAFNN-580 500 × 1000 × 5 8000 0.50
JAFNN-5120 500 × 1500 × 5 12000 0.75
JAFNN-1040 500 × 500 × 10 4000 12 0.25
JAFNN-1080 500 × 1000 × 10 8000 0.50
JAFNN-10120 500 × 1500 × 10 12000 0.75
All-Metal Dust Removal Filter
Features
  • Reusable. The filter element can be reused multiple times, making it suitable for frequent dust removal and oil mist applications in industrial environments.
  • Stable filtration performance. Although classified as coarse efficiency, the multi-layer metal structure is designed to effectively capture large particulate dust, oil mist, metal shavings, and other contaminants. It also offers excellent fire resistance.
  • Robust and deformation-resistant. Particularly suitable for industrial ventilation systems subject to strong vibrations and harsh environments, maintaining filtration integrity over extended periods.
  • High strength and durability: Manufactured from stainless steel or galvanized steel wire mesh or perforated sheet, offering resistance to high temperatures, corrosion, and mechanical impact, ensuring a long service life.
Applications
  • Primary filtration for fresh air systems
  • Ventilation systems resistant to acids/alkali, with high strength and high-temperature resistance
  • Filtration for wax spray booths in automotive assembly plants
The side view of all-metal dust removal air filter

All-metal dust removal filter

An all-metal dust removal air filter details

Details

The side view of all-metal dust removal air filter

All-metal dust removal filter

An all-metal dust removal air filter details

Details

Specifications
  • Frame material: Aluminum alloy or stainless steel
  • Filter material: Corrugated aluminum mesh, stainless steel mesh
  • Filtration grade: G3-G4
  • Test standard: EN 779:2012
A plan structural drawing of all-metal dust removal air filter

All-metal dust removal filter structural diagram

Initial pressure drop and airflow performance curve of all-metal dust removal air filter

Initial pressure drop and airflow performance curve

Table 6: All-metal Dust Removal Air Filter Specifications
Model Overall Dimensions (W × H × D) Rated Airflow Rated Air Velocity Initial Pressure Drop (Pa)
mm m³/h m/s G3 G4
JAFAM-251400 290 × 490 × 25 1400 2.5 40 47
JAFAM-251700 290 × 595 × 25 1700
JAFAM-252875 490 × 595 × 25 2875
JAFAM-253400 595 × 595 × 25 3400
JAFAM-461400 290 × 490 × 46 1400 2.5 40 47
JAFAM-461700 290 × 595 × 46 1700
JAFAM-462875 490 × 595 × 46 2875
JAFAM-463400 595 × 595 × 46 3400
Note: Special specifications can be customized
DPA Dry Paint Pocket Filter
Features
  • High paint mist holding capacity. Up to 27 kg/m3, with a service life 3–6 times longer than conventional paint mist filtration products
  • High paint mist interception efficiency. 99.8% effective interception rate for particles >10 μm, outperforming traditional coarse + medium-efficiency air filters.
  • Low initial air resistance: Owing to the DPA's water- and paint-resistant material and honeycomb three-dimensional structure, the initial air resistance is approximately 20 Pa and can be maintained at a low level during operation, significantly reducing energy consumption costs
Applications

Paint pocket filters are suitable for spray booths and other air filtration processes to capture high-solids coatings, powder coatings, water-based coatings, multi-component coatings, colorants, and adhesive residues.

A side-view of DPA dry paint pocket filter with external frame

DPA dry paint mist filter

Specifications
  • Frame material: Galvanized sheet, stainless steel, aluminum alloy, ABS plastic
  • Filtration grade: G3-G4
A structural drawing of DPA dry paint pocket filter with external dimensions

DPA dry paint pocket filter structural diagram

Initial pressure drop and airflow performance curve of DPA dry paint pocket filter

Initial pressure drop and airflow performance curve

Table 7: DPA Dry Paint Pocket Air Filter Specifications
Model Overall Dimensions (W × H × D) Number of Bags Filtration Area Rated Airflow Filtration Grade Initial Pressure Drop
mm m³/h Pa
JAFDP-340 287 × 592 × 550 3 1.92 1700 G3 40
JAFDP-540 490 × 592 × 550 5 3.28 2600 40
JAFDP-640 592 × 592 × 550 6 4.05 3400 40
JAFDP-355 287 × 592 × 550 3 1.92 1700 G4 55
JAFDP-555 490 × 592 × 550 5 3.28 2600 55
JAFDP-655 592 × 592 × 550 6 4.05 3400 55
Note: Special specifications can be customized