These filters are preferred as secondary or tertiary filtration stages after pre-filters and before filters that require mandatory use for fine particle filtration. They are designed to filter particles with an average size ranging from 1 to 10 microns.

In industrial facilities and comfort ventilation systems, they should be used as the final filtration stage within air handling units during the filtration of atmospheric air. These filters include:

• Bag Filters
• Rigid Filters
• V-Bank Compact Filters

Fine filters can be manufactured using synthetic or fiberglass media. They are available in efficiency classes M5, M6, F7, F8, and F9. Offering low initial pressure drop and a long service life, these filters are available in a wide range of sizes and dimensions.

In systems requiring fine filtration, where a high filtration surface area is needed, the filter media is folded using a mini-pleat design and mounted within a frame structure. Their lightweight and compact design provides significant installation and operational advantages.

Where Are Fine Filters Used?

Fine filters are commonly used immediately after pre-filters in high-efficiency filtration systems such as hospitals, pharmaceutical manufacturing facilities, chemical plants, and the electronics industry.

Since fine filters are designed to capture small particles, they are widely utilized in hospitals, pharmaceutical factories, chemical facilities, and electronics manufacturing environments. These filters help remove contaminants from the air, ensuring cleaner air quality.

What Are the Layers and Features of Fine Filters?

Used for pre-filtration or fine filtration in air handling units and various ventilation systems, these filters consist of three layers. The ultrasonically welded pockets are reinforced with support tubes, allowing the filters to effectively capture fine particles.

The main features of fine filters can be listed as follows:

• Tested in accordance with EN 779 standards.
• Flame resistance is classified as F1 according to DIN 53438 and the material is self-extinguishing.
• Moisture resistance is effective up to 100% relative humidity.
• Can withstand temperatures up to 80°C, depending on the frame type.
• Suitable for paint applications based on IPA testing.
• Available in white, green, pink, or yellow colors.
• The pockets are self-supporting and feature a compact design.