F5 to F9 bag filters are manufactured in accordance with international standards such as EN 779:2012 or ISO 16890. These filters are designed to effectively remove fine dust, bacteria, and airborne pollutants in various ventilation and cleanroom systems.


| Filter Class | Particle Size (µm) | Filtration Efficiency | Common Applications | 
|---|---|---|---|
| F5 | >10 µm | 40 – 60% | HVAC pre-filters, woodworking factories | 
| F6 | 5 – 10 µm | 60 – 80% | Cement plants, fresh air systems | 
| F7 | 1 – 5 µm | 80 – 90% | Cleanrooms, hospitals | 
| F8 | 0.5 – 1 µm | 90 – 95% | Laboratories, electronics manufacturing | 
| F9 | <0.5 µm | 95 – 98% | Pharmaceuticals, microchip production | 
| Filter Class | Color | Description | 
|---|---|---|
| F5 | White/Light Blue | Coarse filtration, low efficiency | 
| F6 | Light Pink | Medium filtration | 
| F7 | Yellow/Light Green | Fine filtration for clean areas | 
| F8 | Dark Blue | Higher fine filtration | 
| F9 | Grey/Purple | Ultrafine filtration, highest efficiency | 
F5–F9 bag filters are engineered for optimal performance and durability, even under harsh industrial conditions.
Filter Media: Polyester or fiberglass, heat-resistant up to 200°C
Frame: Aluminum profile, galvanized steel, or stainless steel (304/316L)
Rubber Gasket: Ensures airtight sealing, prevents air leakage
Pleated Design: Expands surface area, enhances filtration without excessive pressure drop
✅ Protect HVAC Equipment: Prevents fine dust buildup on AHU, FCU coils
 ✅ Energy Efficient: Reduces HVAC operational costs by 15–20%
 ✅ Environmental Compliance: Meets QCVN 22:2020/BTNMT standards
 ✅ Extended System Lifespan: Minimizes maintenance frequency
 ✅ Health Protection: Captures PM2.5, pollen, bacteria, and allergens
🔧 Heavy Industry
 Cement, steel, and chemical factories
 Air intake and return filtration in production lines
🧪 Healthcare & Pharmaceuticals
 Sterile operating rooms (F8–F9)
 Pharmaceutical production & packaging areas
💻 Electronics & High-Tech
 Cleanrooms for component manufacturing
 Microchip and PCB assembly areas
| Criteria | F5 | F6 | F7 | F8 | F9 | 
|---|---|---|---|---|---|
| Pressure Drop (Pa) | 150–200 | 180–220 | 200–250 | 220–280 | 250–300 | 
| Lifespan (months) | 3–4 | 4–5 | 5–6 | 6–8 | 8–12 | 
| Price Level | Low | Medium | High | Very High | Highest | 
Looking for a trusted supplier of F5–F9 bag filters with top-notch quality and competitive pricing?
📌 Contact us today:
BACH LONG TRADING – SERVICE – MANUFACTURING CO., LTD
 📍 Address: 75 Nguyen Hong Street, Ward 1, Go Vap District, HCMC
 📞 Hotline: 093 143 54 54
 📩 Email: info@congnghelockhi.vn
 🌐 Website: www.congnghelockhi.vn