Washable Air Filters/ Electrostatic filters
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Primary filter cotton
The antibacterial treated primary air purifier prefilter replacement can filter suspended matters with a particle size greater than 5μm such as dust, hair, pet hair, etc. in the atmosphere. It is the most commonly used filter material in air purification with low initial resistance, mainly used for pre-filtration of the purification system to extend the life of the HEPA filter.
The pre-filter replacement has simple appearance, easy installation and large dust holding capacity. It can be cleaned and reused repeatedly, which is economical and environmentally friendly.
Main material
- Filter media:
- Polyurethane, PET or PP filter cotton.
- Frame:
- Aluminum alloy frame, high-strength cardboard frame.
- Structure:
- metal mesh pleated filter media, 6mm thick double-sided aluminum mesh filter cotton.
![](https://www.etwinternational.com/public/propic/3334/b_2-1-air-purifier-prefilter-replacement_02m.jpg)
![](https://www.etwinternational.com/public/propic/3334/b_2-1-air-purifier-prefilter-replacement_03m.jpg)
Technical parameters
Composition | PET, PP |
Density | 20-60DPI |
Thickness | 5-50mm |
Dimensions | Customized |
Production process | Thermal bonding method, needle-punching method |
Filtration efficiency | 40%, 65%, 80%, 90% |
Standard EN779 | G1, G2, G3, G4 |
Standard EUROVENT4/5 | EU1, EU2, EU3, EU4 |
Related
room air cleaning, house air purifier, air cleaning mesh, filter replacement
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