Performance Features
Low resistance, high air volume, long service life, large filtration area, and high dust-holding capacity.
Sturdy structure, capable of normal operation under ultra-high air volume conditions.
Application Fields
Primary filtration for industrial and civil ventilation systems; pre-filtration for centralized HVAC systems in cleanrooms.
Design Features
Box filters use synthetic fiber and non-woven filter materials to create replaceable filter cartridges, reducing operating costs.
High-strength outer frame with added support design enhances the durability and strength of the filter.
Available in both "flanged" and "non-flanged" configurations.
A sealing gasket can be optionally installed between the box-style folded filter and the fixed frame to prevent air leakage.
Filtration efficiency grades: G1, G2, G3, G4 (EN779).
Features
High Efficiency
Cost-Effective
Flexible Compatibility
Wide Applicability
Multiple Filtration Grades
Material Composition & Operating Conditions
| Category | Specifications |
| Frame Material | Aluminum Profile / Aluminum Sheet Folded Frame / Galvanized Frame / Stainless Steel Frame |
| Filter Media | Synthetic Fiber |
| Support Frame | Galvanized Wire |
| Filtration Efficiency | G1:40%@2.0μm,G2:65%@2.0μm
G3:85%@2.0μm,G4:90%@2.0μm |
| Max Temperature | 80℃ |
| Max Humidity | 100℃ |
Product Size and Specific Parameters
| Dimensions(W*H*D)(MM) (mm) | Number of Bags | Airflow (M3/h) | Filter Area (m²) |
| 287*592*381 | 3 | 1400 | 1.58 |
| 490*592*381 | 5 | 2400 | 2.65 |
| 592*592*381 | 6 | 2850 | 3.18 |
| 592*592*381 | 8 | 3700 | 4.09 |
| 287*592*500 | 3 | 1850 | 2.08 |
| 490*592*500 | 5 | 3100 | 3.48 |
FAQ
Q1: What applications is this primary filter suitable for?
A: Ideal for commercial buildings, factory workshops, cleanroom pre-filtration, and HVAC systems. It effectively captures large particles like dust, hair, and fibers, extending the lifespan of medium/high-efficiency filters.
Q2: How often should the filter be replaced?
A: Replacement intervals depend on the operating environment. Generally, inspect every 3-6 months. Replace when resistance reaches the final resistance (e.g., ≥250Pa) or visible dust accumulation occurs.
Q3: Can it be cleaned and reused?
A: Not recommended. Washing synthetic fiber media reduces filtration efficiency. We advise replacing the filter cartridge directly for optimal performance.
Why Choose Us?
✅ Premium Materials: High-strength frame + synthetic fiber media ensure low resistance, high dust capacity, and extended service life.
✅ Flexible Compatibility: Multiple sizes (customizable) and flanged/flangeless installation options to fit various ductwork requirements.
✅ High-Efficiency Filtration: Complies with EN779 standard (G1-G4 available), effectively protecting downstream high-grade filters.
✅ Cost-Effective & Durable: Replaceable cartridge design reduces long-term maintenance costs, offering better value than disposable filters.
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