Optimize Your HVAC and Clean Air Systems with a Air Pre Filter Protect Your Equipment and Optimize Performance

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Company Info.

Shenzhen Zhong Jian South Environment Co., Ltd.

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Product Characteristics

Filter Material	Polyester fiber filter cotton
Outline Border	Aluminum profile, galvanized iron
Measure	Filter section size
Initial Resistance	6-15Pa

‌Basic Positioning‌
As the primary filtration stage in HVAC or clean air systems, primary filters serve as "pre-filters," capturing dust particles ≥5μm to reduce the load on subsequent medium/high-efficiency filters and enhance overall system efficiency.
‌Key Value Propositions‌
- ‌Equipment Protection‌: Prevents large particles from clogging ducts and damaging fans, reducing failure rates.
- ‌Cost Optimization‌: Intercepts ~80% of coarse contaminants, significantly extending the service life of high-efficiency filters.
- ‌Purification Foundation‌: Improves indoor air quality and provides primary protection for controlled environments (e.g., medical, electronics).
- II. Performance Parameters
- ‌Filtration Efficiency‌
  - EN779 Standard: ‌G1–G4‌ (ascending efficiency), e.g., G4 captures 40%-60% of ≥2μm particles.
  - Typical interception rate for ≥5μm particles: ‌35%-95%‌ (dependent on media density/structure).
- ‌Resistance & Airflow‌
  - ‌Initial Resistance‌: 10-50Pa (G3/G4).
  - ‌Final Resistance‌: Replace when ≤250Pa.
  - ‌Rated Airflow‌: 500–5000m³/h; scales with size (e.g., 595×595mm panel: 2400m³/h).
- ‌Dust Capacity & Durability‌
  - ‌Dust Holding Capacity‌: 100-1000g/m²; pleated/bag > panel.
  - ‌Temperature Resistance‌: Standard: -10℃~70℃; high-temp variants: 250-300℃.

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