Fiberglass air filter paper has emerged as a critical component in modern air purification systems, offering unmatched efficiency in capturing airborne particles across diverse industrial and domestic applications. Manufactured by Hebei Fangyu Filters Material Technology Co., Ltd., this product combines advanced materials science with rigorous engineering to meet the demanding requirements of cleanrooms, HVAC systems, and specialized manufacturing environments. This article explores the product's technical specifications, applications, and the company's commitment to quality, supported by insights from authoritative sources such as the National Institute of Standards and Technology (NIST).
Fiberglass air filter paper is constructed from fine glass fibers, produced through a wet-forming method that ensures uniform distribution of fibers. This process results in a material with high dust-hold capacity, low resistance, and exceptional strength, making it ideal for applications requiring efficient particle capture without compromising airflow. The product is categorized into three primary series based on filtration efficiency: ASHRAE, HEPA, and ULPA, each tailored to specific industrial and environmental needs.

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The following table provides a comprehensive overview of the fiberglass air filter paper’s technical parameters, including efficiency, weight, thickness, and mechanical properties:
| Classification | Grade | Efficiency (%) | Basic Weight (g/m²) | Thickness (mm) @100kPa | Air Resistance (Pa) @5.3cm/s | Tensile Strength (N/m) MD | Stiffness (mg) MD | |
|---|---|---|---|---|---|---|---|---|
| Minimum | Maximum | |||||||
| 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 | |
The fiberglass air filter paper is designed to meet the needs of a wide range of industries, from residential HVAC systems to high-precision manufacturing environments. Below are some key applications:
The ASHRAE series (F6–F9) is ideal for ordinary air-conditioning systems, gas turbine air intakes, and compressors. These filters provide efficient particle capture while maintaining low airflow resistance, ensuring energy-efficient operation in homes and commercial buildings.
The HEPA series (H10–H14) is used in environments requiring ultra-clean air, such as cleanrooms (10,000 to 100,000 grade), pharmaceutical processing, and high-end vacuum cleaners. These filters meet stringent standards for capturing submicron particles, making them essential for medical and research facilities.

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The ULPA series (U15–U17) is critical for chip factories and 100, 10, or even 1-grade cleanrooms. These filters achieve efficiency levels of 99.999% or higher, ensuring contamination-free environments for sensitive electronic components.
The product is also used in photographic film manufacturing, microelectronic component assembly, paint spray booths, and pharmaceutical processing. Its versatility and durability make it a preferred choice for industries where air quality directly impacts product quality and safety.
As a leading manufacturer of filtration materials, Hebei Fangyu Filters Material Technology Co., Ltd. has established itself as a trusted provider of high-performance air filter solutions. The company’s commitment to innovation, quality control, and customer satisfaction is evident in its product line, which adheres to international standards such as EN779/ISO16890.

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Hebei Fangyu’s products undergo rigorous testing to ensure compliance with global standards. The company’s adherence to precision manufacturing and material science principles aligns with the methodologies promoted by institutions like the National Institute of Standards and Technology (NIST), which emphasizes the importance of accurate measurements and reliable performance in industrial applications.
For industries where air quality is non-negotiable, fiberglass air filter paper offers a combination of efficiency, durability, and adaptability that is hard to match. Whether it’s a residential HVAC system or a semiconductor fabrication plant, the product’s design ensures optimal performance across a wide range of conditions.
The NIST highlights the role of standardized testing and measurement in advancing technological solutions. Hebei Fangyu’s adherence to these principles ensures that its products meet the highest standards of reliability, making them a preferred choice for global clients.
Fiberglass air filter paper represents a significant advancement in air filtration technology, offering solutions that cater to both everyday and specialized needs. With its high efficiency, low resistance, and robust construction, the product is a testament to the company’s dedication to innovation and quality. For businesses and individuals seeking reliable air purification, Hebei Fangyu’s offerings provide a compelling combination of performance and value.
National Institute of Standards and Technology (NIST). (n.d.). Driving Innovation. Retrieved from https://www.nist.gov/.
Keywords: hepa filter paper for sale, hepa filter paper manufacturers, fiberglass filter paper
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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