Product Overview
High Dust Holding Synthetic Air Filter Media is a high-performance coarse filtration material engineered specifically for HVAC and AHU pre-filtration applications requiring extended service intervals. This media is manufactured using a unique gradient-density fiber layering technology, where progressively finer synthetic fibers are arranged from the upstream to downstream face of the sheet. This sophisticated construction enables the media to capture and retain large quantities of airborne particulate across its full depth, rather than merely on the surface.
Designed to meet G2 to G4 efficiency classifications per EN 779 standards, this media delivers reliable coarse filtration while significantly extending filter change-out schedules. The all-synthetic composition ensures consistent mechanical properties under fluctuating temperature and humidity conditions, making it a dependable solution for facility managers prioritizing operational efficiency and reduced maintenance labor.
| Main material | Polyester fiber(PET) |
| Filtration class | G2,G3,G4(EN779) |
| Filter object | ≥5um coarse dust |
| Final resistance | 250Pa |
| Average weight efficiency | 95%(ASHRAE52.1-1992) |
| Flammability rating | F1(DIN 53438),B1(GB/T 17591-2006) |
| Dust holding capacity | 400g/㎡, 500g/㎡, 600g/㎡, |
| Temperature resistance | 100℃ |
| Temp.short peak | 120℃ |
| Humidity resistance | 100% |
Product Features
High Dust Holding Synthetic Air Filter Media delivers exceptional particulate storage through its advanced gradient-density construction, providing reliable G2–G4 filtration with significantly extended service intervals in HVAC pre-filtration systems.
Gradient-Density Fiber Architecture: The media utilizes a multi-layer progressive density structure, with coarse fibers on the air inlet side and progressively finer fibers toward the outlet. This design enables deep particle penetration and uniform dust distribution throughout the media depth, effectively utilizing the entire thickness for contaminant storage.
Superior Dust Holding Capacity: The high capacity coarse filter material achieves dust holding capacities up to 600 g/m² at G4 efficiency level, approximately 50% higher than standard synthetic media of comparable thickness. This exceptional capacity translates directly to extended filter life and reduced replacement frequency.
Slow Pressure Drop Rise: The extended life HVAC pre-filter sheet maintains low initial resistance and exhibits gradual pressure drop progression. At rated airflow, the media achieves only 25–55 Pa initial resistance, with recommended final resistance set at 250–300 Pa for optimal economic operation.
High Mechanical Strength: Thermally bonded synthetic fibers provide excellent tensile strength and structural integrity, ensuring the deep loading synthetic media roll maintains its dimensional stability during handling, installation, and high-velocity airflow conditions.
Moisture & Chemical Resistance: The PET/PP synthetic blend resists moisture absorption and withstands exposure to mild chemical contaminants commonly encountered in industrial and commercial ventilation environments.
Product Applications
High Dust Holding Synthetic Air Filter Media is deployed across demanding commercial, industrial, and institutional ventilation systems, where extended G2–G4 filtration intervals significantly reduce maintenance labor and operational costs.
Industrial Manufacturing AHUs: Plants, warehouses, and production facilities benefit from the media's high capacity to capture coarse particles generated by machining, material handling, and packaging operations, reducing filter change frequency in high-dust environments.
Large Commercial Office Towers: The extended life characteristics make this media particularly valuable in high-rise buildings where filter access and replacement are logistically challenging, minimizing maintenance disruptions to building occupants.
Hospitals & Healthcare Facilities: As primary pre-filtration in multi-stage HVAC systems, this media reduces dust loading on downstream medium and HEPA filters, extending their operational lifespan and maintaining critical indoor air quality standards.
Data Centers & Telecom Facilities: Protects sensitive cooling equipment from atmospheric particulate, ensuring consistent thermal management and equipment reliability with reduced maintenance interventions.
Shopping Malls & Airports: High-traffic public spaces with substantial outdoor air intake benefit from extended service intervals, reducing labor costs while maintaining occupant comfort and air quality.
