G1 Primary Filter
G1 primary filter for coarse pre-filtration in ventilation and air-handling systems.
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Primary Filter G1-G4
Primary filter family covering G1, G2, G3 and G4 grade selections for project-specific pre-filtration requirements.
G1G2G3G4
AIR FILTRATION PRODUCTS
Primary Filter G1-G4 Products
G2 Primary Filter
G2 primary filter for basic dust interception and upstream HVAC system protection.
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G3 Primary Filter
G3 primary filter for HVAC pre-filtration and protection of medium-efficiency filter stages.
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G4 Primary Filter
G4 primary filter for higher-demand pre-filtration in cleanroom HVAC and industrial air systems.
View DetailsPrimary Filter G1-G4 Selection
BAIHANGDA supplies this filtration family across the listed grade range. Final construction is selected according to airflow, dimensions, frame/media requirement and installation method; no fixed performance data is invented on this family page.
Available GradesG1 / G2 / G3 / G4
Dimensions & ConstructionSelected or customized according to the installation requirement.
Airflow & IntegrationMatched to the cleanroom, HVAC or air-filtration system requirement.
Filter Classification Note
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G/F grade terminology is retained because it is widely used in product selection and replacement inquiries. For projects specifying ISO 16890, please confirm the required ePM classification and operating conditions; final filter selection follows the confirmed project specification.