Flat-Panel Pre-Filter
The flat panel pre-filter is a primary air filtration solution specifically designed for HVAC, AHU, and ventilation systems. It efficiently captures large particulate pollutants such as dust, lint, and pollen (≥5μm), effectively improving air quality and extending the service life of secondary medium-efficiency bag filters and HEPA filters, thereby ensuring the stable operation of the entire air purification system.
- Optional Thickness: 10-46mm
- Filter Material: non-woven fabric, synthetic fiber, or fiberglass
- Filtration Grade: G1-G4 (EN779)
- Frame: aluminum alloy / galvanized steel sheet
- Temperature Resistance: ≤ 80℃
- Humidity Resistance: ≤100%RH
- Filtration Object: ≥ 5 μm coarse dust
key features
Efficient Primary Filtration: Effectively captures particles ≥5μm, suitable for G1–G4 primary filtration requirements.
Robust and Durable Structure: Features an aluminum alloy or galvanized steel frame with a detachable design, offers high stability and adapts to demanding operating conditions.
Easy Installation and Maintenance: Simple structure compatible with various air conditioning units and AHU systems.
Customization Support: Filter media thickness, frame material, and dimensions can be customized to meet specific project requirements.
Product Specifications
Note: other specifications can be customized according to your requirements.
| Parameter | Specification |
| Filtration Class | G1-G4 (EN779) |
| Frame Material | aluminum alloy / galvanized steel sheet |
| Filter Media | Synthetic fiber / Fiberglass |
| Efficiency | 35-90%, 5-10μm (varies by grade) |
| Initial Pressure Drop | ≤50Pa, nominal airflow |
| Max Operating Temp | 70-80℃ (depending on material) |
| Standard Sizes | 595×595×20mm, 592×592×46mm (10mm, 15mm, 20mm, 25mm, 46mm available) |
| Dust Holding Capacity | 100-300g/m² |
| Synthetic Fiber Flat Panel Filter | |||||
| Model |
Size (L×W×H) mm |
Area m² |
Airflow.pressure drop | Efficiency | |
| m³/h | Pa | ||||
| G4-20 | 287×592×20 | 0.2 | 1700 | 180 | G4 |
| G4-20 | 592×592×20 | 0.4 | 3400 | 180 | G4 |
| G4-25 | 287×592×25 | 0.2 | 1700 | 180 | G4 |
| G4-25 | 592×592×25 | 0.4 | 3400 | 180 | G4 |
Applications
Flat panel air filters effectively remove large airborne particulate contaminants, protecting downstream filtration equipment and enhancing the operational efficiency of air handling systems. Key applications include:
HVAC systems and air handling units (AHUs): serving as primary filtration to extend the service life of secondary and high-efficiency filters.
Commercial buildings: central air conditioning and ventilation systems in office buildings, hotels, shopping malls, schools, airports, etc.
Industrial and cleanroom environments: pre-filtration within multi-stage filtration systems for electronics manufacturing, laboratories, and industrial facilities.
Healthcare and public facilities: air purification systems in hospitals, medical institutions, and similar settings.
pre-air filter for ventilation system
pre-filter for HVAC systems
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