## Primary Paper Frame Air Filter
Suitable for primary filtration in HVAC systems to prevent dust accumulation and pollution inside the system.
### Features
- Excellent performance, sturdy structure with equal-height pleat design
- Imported high-quality synthetic fiber, large dust holding capacity, and good general performance
- Compact structure, light and convenient
### Applications
- Pre-filtration of air conditioning and ventilation systems
- Large air compressor pre-filtration
- Centralized ventilation air conditioning system and return air filtration in cleanrooms
