Industrial-Grade Primary Filter With Advanced Technology

The primary air filter is the first line of defense in air purification systems, specifically designed to capture larger airborne particles such as dust, pollen, fibers, and insects. This product is made from high-quality synthetic fiber filter media, featuring low resistance and high dust-holding capacity. It effectively protects medium- and high-efficiency filters, extending their service life. Widely used in HVAC systems, ventilation equipment, cleanrooms, and other applications requiring primary filtration.

• Gradual density structure design for layered filtration of different particle sizes

• Captures ≥5μm particles with over 90% efficiency

• Large dust-holding capacity for extended service life

• Washable and reusable (certain models), reducing operational costs

• Protects downstream high-efficiency filters, lowering system maintenance expenses

• Complies with national air filter safety standards

• Free of harmful substances, safe for use

• Some models are recyclable, minimizing environmental impact

• Multiple frame materials and thicknesses available

• Standard sizes compatible with most air handling units

• Custom sizes available for special requirements

A: Typically every 3-6 months, depending on the operating environment and air pollution levels. Replace when resistance reaches twice the initial value.

A: Paper-frame primary filters are not recommended for washing. Metal-frame and certain synthetic filters can be gently cleaned 1-2 times, but filtration efficiency may decrease after washing.

A: 1) Visible darkening of the filter media; 2) Noticeable reduction in airflow; 3) Pressure gauge shows resistance has doubled the initial value.

A: Primary filters are usually marked in green or blue—darker colors generally indicate higher efficiency. Refer to the product's G-rating for exact specifications.

A: Yes, we support custom sizes with a minimum order quantity of 50 units and a lead time of 7-15 working days.

A: 1) Follow the airflow direction arrow; 2) Ensure a tight seal around the frame; 3) Regularly check for loose fasteners; 4) Clean the installation slot before fitting.