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 consumer applications. Manufactured using advanced glass microfiber technology, this material is engineered to balance high dust-hold capacity, low air resistance, and robust mechanical strength. The product is categorized into three primary series—ASHRAE, HEPA, and ULPA—each tailored to specific filtration needs. This article explores the technical specifications, applications, and industry relevance of this innovative filtration solution, while also highlighting the expertise of its manufacturer, Hebei Fangyu Filters Material Technology Co., Ltd..

Product Features and Technical Advantages
The glass microfiber air filter media is produced through a wet-forming process that ensures uniform fiber distribution. This method results in a material with remarkable characteristics, including:
- High Dust-Hold Capacity: The dense fiber structure allows the filter to capture and retain a significant amount of particulate matter before requiring replacement.
- Low Air Resistance: Optimized fiber arrangement minimizes pressure drop, ensuring efficient airflow while maintaining filtration efficiency.
- High Mechanical Strength: The material’s tensile strength (ranging from 1,200 N/m to 1,500 N/m) ensures durability under varying operational conditions.
- Customizable Filter Efficiency: The product is available in multiple grades, from ASHRAE F6 to ULPA U17, catering to diverse filtration requirements.

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 |

Applications Across Industries
The versatility of fiberglass air filter paper makes it suitable for a wide array of applications, including:
- Residential and Commercial HVAC Systems: ASHRAE-grade filters (F6-F9) are ideal for ordinary air-conditioning systems, gas turbine air intakes, and compressors.
- High-End Air Purification: HEPA filters (H10-H14) are used in 10,000 to 100,000-grade cleanrooms, nuclear exhaust systems, and premium vacuum cleaners.
- Ultra-Low Particulate Air (ULPA) Filtration: ULPA-grade filters (U15-U17) are critical in semiconductor manufacturing, pharmaceutical processing, and cleanrooms requiring 100, 10, or even 1-grade cleanliness.
- Industrial Processes: The material is employed in paint spray booths, photographic film manufacturing, and microelectronic component assembly.
According to the National Institute of Standards and Technology (NIST), the accuracy of filtration systems is vital for maintaining air quality in sensitive environments. “Precise measurement and standardization of filter efficiency are essential for ensuring that air purification systems meet the required performance criteria,” notes NIST’s guidelines on air filtration standards (NIST, 2023).
Company Background: Hebei Fangyu Filters Material Technology Co., Ltd.
Based in Hebei, China, Hebei Fangyu Filters Material Technology Co., Ltd. is a leading manufacturer of high-performance filtration materials. With a focus on innovation and quality, the company specializes in producing glass microfiber air filter paper that meets international standards such as EN779 and ISO16890. Their product line includes fiberglass filter paper and HEPA filter paper, serving industries ranging from healthcare to semiconductor manufacturing.
Conclusion
Fiberglass air filter paper represents a significant advancement in air filtration technology, combining high efficiency with durability and adaptability. Its application across diverse sectors underscores its importance in maintaining air quality and protecting both human health and sensitive equipment. As industries continue to prioritize sustainability and precision, the role of advanced filtration solutions like those offered by Hebei Fangyu Filters Material Technology Co., Ltd. will only grow in significance.
References
NIST (National Institute of Standards and Technology). (2023). Air Filtration Standards. Retrieved from https://www.nist.gov/standards-and-measurements/air-filtration-standards
Hebei Fangyu Filter Material Technology Co.,Ltd is the leading innovative developer and manufacturer all kinds of filter materials in China.pocket filter media factory Located in the economically developed Handan Hebei specialized in various kinds of filter materials from Synthetic Media,Paint stop Filter Media Pre- filter Non Woven Fabric ,Wire Mesh Backed Laminated Filter Media,Ceiling filter Auto Cabin Filter Media, polypropylene filter media, Glass Microfiber Filter Media Nonwoven Fabric,Pre- filter non woven fabric, activated carbon filter materials, EN779 bag filter materials, HEPA filter media, air filter HEPA filter media and Filter Accessories.Our filter materials have passed ISO9001:2000 quality certification since 2005.Certified by ISO9001, UL2 and SGS, with emphasis on quality and service. Our strength is the ability to find innovative ways to meet marketplace or product requirements.activated filter media price|super blog