
Fiberglass air filter paper has emerged as a critical component in modern air purification systems, offering exceptional performance across a wide range of industrial and commercial applications. Manufactured using advanced glass microfiber technology, this material combines high dust-holding capacity with low air resistance, making it an ideal choice for environments where air quality is paramount. This article explores the technical specifications, applications, and advantages of fiberglass air filter paper, while also highlighting its role in maintaining clean air standards.
The fiberglass air filter paper is categorized into three primary series based on filtration efficiency: ASHRAE, HEPA, and ULPA. Each series is designed to meet specific air quality requirements, as detailed in the following technical specifications table:
| 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 data demonstrates the material's versatility, with fiberglass air filter paper offering varying levels of efficiency to suit different filtration needs. For instance, the HEPA series achieves up to 99.995% efficiency, making it suitable for high-precision environments like semiconductor manufacturing, while the ULPA series provides even higher efficiency, reaching 99.9999% for ultra-clean applications.
One of the standout features of fiberglass air filter paper is its exceptional fiber distribution, which ensures uniform particle capture and reduces airflow resistance. This is achieved through a wet-forming manufacturing process that creates a dense yet breathable structure. The material's high dust-holding capacity allows it to maintain efficiency over extended periods, reducing the frequency of replacements and maintenance costs.

Additionally, the paper's high tensile strength (up to 1200 N/m) ensures durability under demanding conditions, while its low stiffness (as low as 1000 mg) allows for easy integration into various filter designs. These properties make it an ideal choice for applications requiring both reliability and flexibility.
The fiberglass air filter paper is widely used in diverse sectors, including:
For specialized applications, the material is available in different grades. For example, the ASHRAE series (F5-F9) is suitable for general-purpose air conditioning systems, while the HEPA and ULPA series cater to high-efficiency requirements in cleanrooms and nuclear facilities.
Hebei Fangyu Filters Material Technology Co., Ltd., the manufacturer of this fiberglass air filter paper, has established itself as a leader in filtration technology. With a focus on innovation and quality, the company adheres to international standards such as EN779 and ISO16890, ensuring its products meet rigorous performance criteria.

The company's commitment to excellence is reflected in its comprehensive product range, which includes fiberglass filter paper and HEPA filter paper for sale. By combining advanced manufacturing techniques with a deep understanding of industry needs, Hebei Fangyu provides solutions that enhance air quality and operational efficiency across multiple sectors.
According to the National Institute of Standards and Technology (NIST), "Air filtration systems play a critical role in maintaining indoor air quality, particularly in environments where particulate control is essential." This aligns with the performance characteristics of fiberglass air filter paper, which is engineered to meet these stringent requirements.
NIST also emphasizes the importance of standardized testing for filtration materials, noting that "compliance with standards such as EN779 and ISO16890 ensures that products deliver consistent performance under real-world conditions." Hebei Fangyu's adherence to these standards underscores its commitment to quality and reliability.
Fiberglass air filter paper represents a significant advancement in air purification technology, offering a balance of efficiency, durability, and versatility. Whether used in residential HVAC systems or industrial cleanrooms, this material provides a reliable solution for maintaining air quality. With its comprehensive technical specifications and wide-ranging applications, it continues to be a preferred choice for professionals seeking high-performance filtration solutions.
For more information about fiberglass filter paper and HEPA filter paper manufacturers, visit Hebei Fangyu Filters Material Technology Co., Ltd..
National Institute of Standards and Technology (NIST). (n.d.). Indoor Air Quality and 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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