Product Overview
Glass Fiber Media for Bag Filters represents the industry standard for medium to high efficiency air filtration in HVAC and AHU systems.
The micro-fine fiberglass melt-blown media used in this product is chemically stable and resistant to moisture and mild corrosive environments. Glass fiber media offers superior thermal stability, performing consistently across temperatures from -10°C to 80°C without significant degradation. This makes it particularly suitable for applications where temperature fluctuations are common, such as commercial HVAC bag filter media in rooftop units or industrial ventilation systems handling process exhaust .
The media is typically supplied in roll form or pre-cut sheets, ready for conversion into bag filter configurations.
Efficiency Grade (EN779: 2012) | M5 | M6 | F7 | F8 | F9 |
@14cm/s，0.4μm | 30±10% | 35±10% | 55±10% | 75±10% | 85±10% |
Pressure Drop @14 cm/s | ≤35Pa | ≤45Pa | ≤70Pa | ≤110Pa | ≤140Pa |
| Basis Weight | 80±5g/㎡ | 80±5g/㎡ | 75±5g/㎡ | 80±5g/㎡ | 80±5g/㎡ |
Thickness @500 Pa | 4.0±1.0mm | 4.0±1.0mm | 3.0±1.0mm | 3.0±1.0mm | 3.0±1.0mm |
Colour (Customizable) | Dark Yellow | Orange | Light Purple | Light Yellow | Light Yellow |
| Width | 695 mm, or customized according to customer requirements. | ||||
Product Features
Glass Fiber Media for Bag Filters offers several distinct advantages that make it the preferred choice for critical air filtration applications:
High Filtration Efficiency – The micro-fine fiberglass melt-blown media achieves efficiency ratings from M5 to F9 (EN 779) or ePM10 to ePM1 (ISO 16890), capturing particles as small as 0.4 microns with minimum test efficiency up to 84% at F9 grade .
Low Initial Pressure Drop – Advanced fiber distribution technology minimizes resistance to airflow, with typical initial pressure drops as low as 40-55 Pa at rated airflow, resulting in reduced energy consumption and lower operating costs .
High Dust Holding Capacity – The three-dimensional fiber network provides significant void volume for particle storage, extending service life and reducing replacement frequency.
Thermal and Chemical Stability – Glass fiber media maintains structural integrity up to 80°C and resists degradation from humidity and mild chemical exposures.
Consistent Performance Throughout Service Life – The rigid fiber structure prevents media compression under airflow, ensuring stable efficiency from installation to replacement. This flat pressure drop curve is a hallmark of quality glass fiber media.
Product Applications
Glass Fiber Media for Bag Filters is widely deployed across commercial, institutional, and industrial sectors where air quality is paramount:
Commercial HVAC Systems
In office buildings, retail spaces, and hotels, commercial HVAC bag filter media provides essential protection for building occupants and equipment. The media captures common indoor pollutants including dust, pollen, mold spores, and textile fibers, maintaining indoor air quality at levels recommended by ASHRAE standards. Building managers benefit from extended filter life and predictable replacement schedules.
Healthcare Facilities
Hospitals, clinics, and laboratories require stringent air filtration to protect patients, staff, and sensitive equipment. HVAC bag filter media in F7-F9 grades is commonly specified for operating rooms, isolation wards, and pharmaceutical compounding areas. The media effectively captures bacteria-carrying particles and fungal spores, supporting infection control protocols .
Data Centers and Electronics Manufacturing
Sensitive electronic equipment requires particle-free air to prevent short circuits and manufacturing defects. The high efficiency variants of Glass Fiber Media for Bag Filters are deployed as pre-filters for cleanrooms and as final filters for data center cooling systems, capturing sub-micron particles that could damage hard drives and circuit boards.
Government and Institutional Buildings
Courthouses, schools, and municipal buildings rely on this media for people health and building protection. The product is specified in many public sector HVAC retrofit projects due to its proven performance and compliance with indoor air quality regulations .
Industrial Ventilation
Factories, warehouses, and manufacturing facilities use micro-fine fiberglass melt-blown media to control dust emissions from processes such as woodworking, metal grinding, and chemical handling. The media's thermal stability makes it suitable for ventilation systems handling moderately heated exhaust.
Airport and Transportation Hubs
Terminal buildings with high people density and continuous operation require durable, reliable filtration. Glass fiber bag media provides the balance of efficiency and energy performance needed for 24/7 HVAC operation in these demanding environments.
