I. Product Introduction
The Pleated Pre G3/G4 Filter is a high-efficiency preliminary air filter designed to capture coarse dust, pollen, fibers, and large airborne particles (5–10µm). With a pleated design for increased surface area, it serves as the first line of defense in HVAC systems, cleanrooms, and industrial air handling units, extending the lifespan of downstream HEPA or ULPA filters.
Frame of Pleated Pre G3 G4 Filter: Aluminum alloy
Efficiency: G3, G4
Origin: Shenzhen, China
HS CODE: 8421399090
II. Product Features
1. Outer frame with hard paper frame or aluminum profile, non-woven chemical fiber cloth, folding forming to support metal mesh.
2. Structure, often used for ventilation system stage filtration.
3. Also applies to air conditioning and ventilation systems that require only primary filtration.
III. Product Parameters
| Model | Dimension (mm) |
Rated air flow (m³/h) |
Resistance (Pa) |
Eff(≥5um) | Media |
| SAF-CG-8 | 295*295*46 | 800 | 10-25 | G1-G4 | cotton/ corrugated aluminum mesh/ nylon net/ activated carbon granule/ high-temp fiberglass cotton |
| SAF-CG-13 | 295*495*46 | 1300 | |||
| SAF-CG-16 | 295*595*46 | 1600 | |||
| SAF-CG-22 | 395*595*46 | 2200 | |||
| SAF-CG-27 | 495*595*46 | 2700 | |||
| SAF-CG-32 | 595*595*46 | 3200 | |||
| Customized |
IV. Product Applications
1. commercial and industrial ventilation and air-conditioning systems; cleaning and filtering;
2. general indoor ventilation system; initial filtration;
3. household air conditioning purification equipment.
V. FAQ
Q1: How often should G3/G4 filters be replaced?
- G3: Every 3–6 months (high dust environments) or 6–12 months (light use).
- G4: Every 2–4 months (industrial) or 6 months (commercial).
Q2: Can these filters be washed/reused?
-Most are disposable; some models with washable media are available (specify when ordering).
Q3: What's the difference between G3 and G4?
-G4 has higher efficiency (95% vs. 90%) but slightly higher pressure drop.
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