

Primary Air Filters - Efficient Pre-Filtration for Clean Air Systems
Primary Air Filters, also known as pre-filters, are the first line of defense in air filtration systems. Designed to capture large particles such as dust, dirt, and debris, these filters protect downstream equipment, including higher-efficiency filters like HEPA or bag filters, from premature clogging and damage. Primary filters are widely used in HVAC systems, industrial facilities, and cleanroom environments to improve air quality and reduce maintenance costs.




Frame | Aluminum/Galvanized |
Filter Material | Polyester Synthetic Fiber |
Max.temperature | 80ºC |
Max.humidity | 80%RH |
Frame thickness | 25mm/46mm/96mm |
Model | Size(mm)W*H*D | Filter area | Rated Air Flow(m/h) | Initial Resistance | Efficiency | ||
70% | 100% | 120% | |||||
C-G4 | 290*595*46 | 1.94 | 1700 | 40 | 60 | 75 | 90%(G4) |
C-G4 | 495*495*46 | 2.06 | 2400 | 40 | 60 | 75 | |
C-G4 | 595*495*46 | 2.90 | 2800 | 40 | 60 | 75 | |
C-G4 | 595*595*46 | 3.86 | 3400 | 40 | 60 | 75 | |
C-G4 | 290*595*96 | 2.84 | 1700 | 40 | 60 | 75 | |
C-G4 | 495*495*96 | 3.02 | 2400 | 40 | 60 | 75 | |
C-G4 | 495*595*96 | 4.26 | 2800 | 40 | 60 | 75 | |
C-G4 | 595*595*96 | 5.68 | 3400 | 40 | 60 | 75 |


Senbao Purifying adopts cutting - edge manufacturing equipment and procures premium imported filter materials. Complemented by a rigorous manufacturing process control system and extensive application experience amassed over the years, our products have won the favor of customers from both the domestic and international markets.

