Fiberglass air filter paper is a high-performance filtration material designed to meet the stringent demands of modern air purification systems. Crafted from glass microfiber wool using a wet-forming method, this product offers exceptional dust-hold capacity, low resistance, and high strength. It is categorized into three primary series—ASHRAE, HEPA, and ULPA—each tailored for specific filtration efficiency levels and applications. This article explores the product’s features, technical specifications, use cases, and the expertise of its manufacturer, Hebei Fangyu Filters Material Technology Co., Ltd.
Product Overview
The fiberglass air filter paper is engineered to provide efficient particulate removal while maintaining low airflow resistance. Its uniform fiber distribution ensures consistent performance across a wide range of environments. The product is available in multiple grades, including F6-F9 (ASHRAE series), H10-H14 (HEPA series), and U15-U17 (ULPA series), each designed for specific filtration requirements. For instance, ASHRAE filters are ideal for general HVAC systems, while HEPA and ULPA filters cater to high-precision applications such as pharmaceutical processing and microelectronics manufacturing.
Key Features:
- High Dust-Hold Capacity: Retains more particles before requiring replacement.
- Low Airflow Resistance: Ensures energy efficiency in ventilation systems.
- Excellent Mechanical Strength: Resists tearing and deformation under pressure.
- Customizable Grades: Adaptable to diverse industrial and residential needs.

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Technical Specifications
The following table outlines the technical parameters of the fiberglass air filter paper across different series:
| Classification | Grade | Efficiency (%) | Basic Weight (g/m²) | Thickness (mm) | Air Resistance (Pa) | Tensile Strength (N/m) | Stiffness (mg) | |
|---|---|---|---|---|---|---|---|---|
| MD | CD | |||||||
| ASHRAE | FY-F9 | 95 | 70 | 0.34 | 55±10 | 1200 | 1200 | 1200 |
| FY-F8 | 90 | 70 | 0.34 | 35±5 | 1200 | 1200 | 1200 | |
| FY-F7 | 80 | 70 | 0.34 | 33±5 | 1200 | 1200 | 1200 | |
| FY-F6 | 60 | 70 | 0.33 | 20±5 | 1200 | 1200 | 1200 | |
| HEPA | FY-H14 | 99.995 | 70 | 0.34 | 340±20 | 1200 | 1200 | 1000 |
| FY-H13 | 99.97 | 70 | 0.34 | 290±20 | 1200 | 1200 | 1000 | |
| FY-H12 | 99.8 | 70 | 0.34 | 250±20 | 1200 | 1200 | 1000 | |
| FY-H11 | 98 | 70 | 0.34 | 120±20 | 1200 | 1200 | 1000 | |
| FY-H10 | 94 | 70 | 0.34 | 80±15 | 1200 | 1200 | 1000 | |
| ULPA | FY-U17 | 99.9999 | 73 | 0.37 | 500±20 | 1200 | 1200 | 1000 |
| FY-U16 | 99.9999 | 73 | 0.37 | 440±20 | 1200 | 1200 | 1000 | |
| FY-U15 | 99.999 | 73 | 0.37 | 390±20 | 1200 | 1200 | 1000 | |
Applications
The versatility of fiberglass air filter paper makes it suitable for a wide range of applications, including:
- Residential and Commercial HVAC Systems: ASHRAE series filters (F6-F9) are ideal for home air conditioners and room air purifiers.
- Industrial Air Purification: HEPA filters (H10-H14) are used in pharmaceutical processing, paint spray booths, and microelectronic manufacturing to maintain cleanroom standards.
- High-Precision Environments: ULPA filters (U15-U17) are critical in semiconductor fabrication and biotechnology laboratories, where 100-grade or cleaner environments are required.
- Specialized Equipment: The product is also employed in gas turbine air intakes, vacuum exhaust systems, and high-end air purifiers.

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Company Background: Hebei Fangyu Filters Material Technology Co., Ltd.
Hebei Fangyu Filters Material Technology Co., Ltd. is a leading manufacturer of high-quality filtration materials, specializing in fiberglass air filter paper and HEPA filter paper. With a focus on innovation and precision engineering, the company serves industries such as pharmaceuticals, electronics, and HVAC systems. Their products are designed to meet international standards, including EN779 and ISO16890, ensuring reliability and performance in demanding environments.
As a trusted supplier, Hebei Fangyu emphasizes sustainability and technological advancement to address the evolving needs of global markets. Their comprehensive product range and customization capabilities make them a preferred partner for manufacturers and end-users worldwide.

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Industry Standards and NIST Reference
The fiberglass air filter paper complies with international filtration standards such as EN779 and ISO16890, which are referenced by the National Institute of Standards and Technology (NIST). According to NIST, accurate measurement and testing of filtration efficiency are critical for ensuring air quality and system performance in industrial and residential settings [1]. These standards provide a framework for evaluating particulate removal efficiency, airflow resistance, and material durability—key factors in selecting the right filtration solution.
By adhering to NIST-endorsed protocols, Hebei Fangyu ensures that their products meet the highest levels of quality and consistency. This commitment to technical excellence positions the company as a reliable source for high-performance filtration materials.
Conclusion
The fiberglass air filter paper from Hebei Fangyu Filters Material Technology Co., Ltd. is a versatile and durable solution for modern air filtration needs. With its superior efficiency, low resistance, and customizable grades, the product is well-suited for diverse applications, from residential HVAC systems to high-precision cleanrooms. The company’s adherence to international standards and NIST-recommended practices further underscores its commitment to quality and innovation.
For more information about HEPA filter paper for sale or fiberglass filter paper manufacturers, visit the product page or explore the company profile. Whether you’re seeking high-efficiency filters or specialized filtration solutions, Hebei Fangyu offers the expertise and reliability to meet your requirements.
References
[1] National Institute of Standards and Technology (NIST) – Standards for Air Filtration and Measurement.
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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