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These three-stage filters are core components for clean air conditioning systems. They serve as an essential barrier to maintain air quality in industrial and commercial environments.
Primary plate filters are suitable for primary filtration in air conditioning systems, mainly used to filter dust particles above 5μm. The frame materials include aluminum profiles, galvanized steel, and stainless steel. Filter materials utilize non-woven fabric, nylon mesh, or aluminum perforated mesh.


| Type | Nominal Size (W×H×D mm) | Rated Air Volume (m³/h) | Initial Pressure (Pa) | Efficiency Grade | Outer Frame Material |
|---|---|---|---|---|---|
| HR-M401 | 295×295×21 / 595×595×46 | 800 - 3200 | 25 | YN-G1 40% | Aluminum / Galvanized |
| HR-M402 | 295×595×46 | 1600 | 30 | YN-G2 70% | Aluminum / Galvanized |
| HR-M403 | 595×495×46 | 2700 | 30 | YN-G3 85% | Aluminum / Galvanized |
| HR-M404 | 595×595×46 | 3200 | 30 | YN-G4 90% | Aluminum / Galvanized |











