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China M9 F9 Medium Pocket Filter - Quality Air Filters from Trusted Suppliers & Factory
What is Synthetic Pocket Filter?
The filter material is made of high-performance non-woven fabric by the thermal melting process, to avoid the discomfort caused to the human body by old-fashioned glass fiber materials. The filter material contains electrostatic fiber, which has an excellent filtering effect on sub-micron dust.
Features
- Extra long service life
- High burst resistance
- Large surface area
- Fits all commonly used filter frames
- High efficiencies at low pressure drops
- Uniform identification is used for appearance color, which is easy to identify.
Application
The pocket filter is suitable for intermediate filtration in an air conditioning system. It is located in front of the HEPA filter.
It is mainly used to filter 1-5 megabytes of dust particles to protect the lower filters in the system and the system itself. It has the advantages of small resistance and a large volume of air. Optional style has bag type, frame type, and combination type.
Dimensions & Technical Details
| Bag (pcs) | Size (mm) | Rated Airflow (m³/h) | Filter Object (μm) | Initial Resistance(Pa) | ||||
|---|---|---|---|---|---|---|---|---|
| M5 | M6 | F7 | F8 | F9 | ||||
| 8 | 592×592×600 | 2200/3400 | ≥0.4 | <35/45 | <45/65 | <55/80 | <65/100 | <65/110 |
| 6 | 592×592×600 | 2200/3400 | ≥0.4 | <40/50 | <55/75 | <60/85 | <65/110 | <70/120 |
| 5 | 492×592×600 | 2000/3000 | ≥0.4 | |||||
| 4 | 287×592×600 | 1100/1700 | ≥0.4 | |||||
Note: Other specifications can be customized according to requirements.
Synthetic Bag Filter Technical Specification
| Filter Type | Pocket Filter |
| Filter Class (EN 779) | M5 |
| Filter Media & Separator | Non-woven Fabric |
| Filter Frame | Aluminum/Galvanized/Plastic |
| Temperature Resistance | 80°C |
| Max. Temperature | 100°C |
| Relative Humidity | 100% |
| Rec. Final Pressure Drop | 400 - 450 Pa. |
How often should bag filters be replaced?
Replacement Cycle:
- Under the rated air volume, it needs to be replaced in 3 - 6 months.
- Resistance of 450Pa or more must be replaced.
- If it is a washable filter material, it can be washed with clean water or neutral detergent solution to dry and then used, washed up to two times, and then replaced.
- If the dust concentration in the environment is large, the service life will be shortened.
Frequently Asked Questions (FAQ)
1. What is the main advantage of synthetic pocket filters?
They use high-performance non-woven fabric without glass fibers, making them safer for human health while remaining highly effective at filtering sub-micron dust particles thanks to their electrostatic properties.
2. Where are synthetic pocket filters typically applied?
They are ideally suited for intermediate filtration in HVAC systems and are usually placed directly in front of HEPA filters to protect them and extend their operational lifespan.
3. Can synthetic pocket filters be washed and reused?
Yes, if you choose the washable filter material variant, it can be cleaned with clean water or a neutral detergent solution. However, it should only be washed up to two times before it needs to be completely replaced.
4. What is the recommended final pressure drop for replacement?
The recommended final pressure drop for replacement is between 400 and 450 Pa. Once the resistance reaches 450Pa or more, the filter must be replaced to ensure system efficiency.
5. Do you offer custom sizes for pocket filters?
Yes, while our standard sizes fit all commonly used filter frames, other specifications and dimensions can be fully customized according to your specific system requirements.
6. What is the maximum temperature these filters can withstand?
The synthetic bag filters have a standard temperature resistance of 80°C and can withstand a maximum temperature of up to 100°C under 100% relative humidity.



