Introduction of Medium-Efficiency F7 Plate Air Filter

The Medium-Efficiency F7 Plate Air Filter is an essential secondary filtration device for air purification, HVAC, and industrial clean ventilation systems. As a critical transitional filter connecting primary and high-efficiency filtration stages, it belongs to the national F5-F9 medium-efficiency filter series and delivers stable and reliable filtration performance. Tested in accordance with industrial colorimetric standards, its rated filtration efficiency remains steadily at 75% to 85%. It effectively captures fine suspended particles ranging from 1 μm to 10 μm, such as fine dust, catkins, pollen, smoke particles, and microbial spores. It remedies the limitation of primary filters, which only remove large particles but fail to filter fine dust, while greatly reducing the filtration burden on downstream high-efficiency filters.
Different from bag filters, this filter adopts an integrated plate molding process, resulting in an ultra-thin, neat, and compact structure that minimizes installation space occupation. The outer frame is available in galvanized steel, aluminum alloy, and ABS engineering plastic, providing excellent corrosion resistance, deformation resistance, and airtightness for installation in fan coil units, air conditioning units, and purification air cabinets. The internal filter media adopts high-density synthetic non-woven fiber or glass fiber with evenly distributed fibers and superior air permeability. Equipped with a built-in metal support frame, it prevents media deformation and damage caused by long-term airflow impact, ensuring stable long-term operation. The specially treated filter media features a uniform pore structure, sufficient dust holding capacity, and excellent air permeability, effectively avoiding local blockage and uneven airflow velocity.