
Fiberglass air filter paper, specifically glass microfiber air filter media, represents a cutting-edge solution in air filtration technology. Manufactured using a wet-forming method, this material is characterized by its uniformly distributed fibers, high dust-hold capacity, low resistance, and exceptional strength. These properties make it an ideal choice for a wide range of applications, from residential HVAC systems to industrial cleanrooms. The product is categorized into three main series based on filtration efficiency: ASHRAE, HEPA, and ULPA.

The technical specifications of fiberglass air filter paper are meticulously designed to meet the demands of diverse environments. Below is a detailed table outlining the parameters for each classification:
| Classification | Grade | Efficiency (%) | Basic Weight (g/m²) | Thickness (mm) @100kPa | Air Resistance (Pa) @5.3cm/s | Tensile Strength (N/m) MD | Stiffness (mg) MD |
|---|---|---|---|---|---|---|---|
| ASHRAE | FY-F9 | 95 | 70 | 0.34 | 55±10 | 1200 | 1200 |
| FY-F8 | 90 | 70 | 0.34 | 35±5 | 1200 | 1200 | |
| FY-F7 | 80 | 70 | 0.34 | 33±5 | 1200 | 1200 | |
| FY-F6 | 60 | 70 | 0.33 | 20±5 | 1200 | 1200 | |
| HEPA | FY-H14 | 99.995 | 70 | 0.34 | 340±20 | 1200 | 1000 |
| FY-H13 | 99.97 | 70 | 0.34 | 290±20 | 1200 | 1000 | |
| FY-H12 | 99.8 | 70 | 0.34 | 250±20 | 1200 | 1000 | |
| FY-H11 | 98 | 70 | 0.34 | 120±20 | 1200 | 1000 | |
| FY-H10 | 94 | 70 | 0.34 | 80±15 | 1200 | 1000 | |
| ULPA | FY-U17 | 99.9999 | 73 | 0.37 | 500±20 | 1200 | 1000 |
| FY-U16 | 99.9999 | 73 | 0.37 | 440±20 | 1200 | 1000 | |
| FY-U15 | 99.999 | 73 | 0.37 | 390±20 | 1200 | 1000 |
The glass microfiber air filter media is engineered to balance high efficiency with minimal airflow resistance, ensuring optimal performance in both commercial and industrial settings. Its ability to capture a wide range of particulate matter, from large dust particles to submicron allergens, makes it a versatile solution for air purification.

The versatility of fiberglass air filter paper is evident in its widespread use across multiple sectors. ASHRAE series filters are commonly employed in ordinary air-conditioning systems, gas turbine air intakes, and compressors. The HEPA filters, with their high efficiency, are essential in environments requiring stringent air quality control, such as pharmaceutical processing, semiconductor manufacturing, and high-end household vacuum cleaners. Meanwhile, ULPA filters are designed for ultra-clean environments like chip fabrication facilities and grade 100 or even grade 1 cleanrooms.
Additional applications include:
As a leading provider of filtration solutions, Hebei Fangyu Filters Material Technology Co., Ltd. specializes in the production of high-quality air filter materials. The company's commitment to innovation and adherence to international standards ensure that its products meet the rigorous demands of modern industries. With a focus on fiberglass filter paper and HEPA filter paper manufacturers, Hebei Fangyu has established itself as a trusted name in the filtration sector.
The company's products are tested under standards such as EN779 and ISO16890, ensuring compliance with global benchmarks for air filtration efficiency and performance. This dedication to quality is reflected in the company's extensive product range, which caters to both commercial and industrial applications.
The technical advantages of fiberglass air filter paper are underscored by its ability to maintain high efficiency while minimizing energy consumption. The low resistance of the material ensures that HVAC systems operate efficiently, reducing the load on fans and motors. Additionally, the high dust-hold capacity of the filter media extends its service life, reducing the frequency of replacements and maintenance costs.
According to the National Institute of Standards and Technology (NIST), the development of advanced filtration materials is critical for improving indoor air quality and reducing health risks associated with airborne particulates. The glass microfiber air filter media aligns with these objectives by providing a reliable solution for air purification in both residential and commercial settings.
Fiberglass air filter paper stands as a testament to the advancements in filtration technology, offering a blend of efficiency, durability, and adaptability. Whether it's for everyday use in home air conditioners or critical applications in cleanrooms and industrial facilities, this material continues to play a vital role in ensuring air quality and safety. Hebei Fangyu Filters Material Technology Co., Ltd. remains at the forefront of this innovation, delivering products that meet the evolving needs of the global market.
National Institute of Standards and Technology (NIST) (2025). Standards and Measurement Guidelines for Air Filtration Systems. Retrieved from https://www.nist.gov/.
Raw Material: Various technical polypropylene and non-woven fiber
Process Technilogh:composite
Application:Pocket(bag) Filter
Range of efficiency:M5 to F9
F5:white+activated carbon:150g/㎡
F6:green+activated carbon:150g/㎡
F7:pink+activated carbon:150g/㎡
F8:yellow +activated carbon:150g/㎡
Thickness:0.2-6 mm or Customized
Strand Thickness:0.5-8mm
Swd:2.5-100mm Lwd: 4.5-200mm
Surface Treatment:Powder Coated,Galvanized
MATERAL: PHENOLIC PAPER
MELT-BLOWN PBT
NON-WONEN LAMINATES
DIESEL FUEL FINE FILTERATION GRADE
APPLICATION : FUEL OIL WATER SEPERATION FILTER MEDIA
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