Medium air filters (F series)

F5–F9 Medium Efficiency Air Filters for HVAC Systems


BoYang manufactures F5, F6, F7, F8 and F9 medium efficiency air filters for commercial and industrial HVAC systems, air handling units and cleanroom pre-filtration applications.

Medium efficiency filters are typically installed after the primary filtration stage to capture finer airborne particles before the air reaches final-stage filtration equipment. They are widely used to improve indoor and process air quality while reducing dust loading on downstream HEPA filters.

We supply bag filters and other medium efficiency filtration configurations with multiple filter media, pocket quantities, dimensions and frame options for standard HVAC equipment and customized installations.


Medium Efficiency Filtration Between Pre Filters and HEPA Filters

In a multi-stage air filtration system, medium efficiency filters provide an important intermediate filtration stage.

After coarse particles are removed by the primary filter, an F-series filter captures smaller suspended particles and reduces the particle concentration entering downstream equipment. In cleanroom and high-efficiency filtration systems, this can significantly reduce the loading on final HEPA filters.

Different filtration grades can be selected according to the required air cleanliness, system resistance and operating conditions.


F5-F9 Bag Filters for Industrial HVAC

Bag filters are commonly used for medium efficiency filtration because their extended filtration area provides a balance between filtration capacity, airflow and dust holding performance.

BoYang can supply medium efficiency bag filters with different pocket numbers, pocket depths, media types, frame materials and overall dimensions to match different AHU and ventilation systems.

Applications include commercial buildings, industrial plants, pharmaceutical HVAC, hospitals, electronics manufacturing, food processing, automotive production and cleanroom air handling systems.


Custom Medium Efficiency Air Filters

Medium efficiency filters can be customized according to installation dimensions, filtration grade, airflow requirements, pressure drop targets and operating environment.

For OEM and replacement projects, our engineering team can produce filters based on drawings, samples or existing equipment specifications.


Looking for F5-F9 medium efficiency filters?

Provide the filter grade, dimensions, airflow, quantity or existing filter specification and we will recommend a suitable configuration.

Our Workshop

Inspection & Compliance Documents

We can arrange third-party inspection and issue this attestation for each shipment, supporting customs clearance and L/C presentation.

Our Advantages

  • Professional manufacturer of clean air systems and filtration products
  • Complete product system widely used in cleanrooms, medical facilities, pharmaceuticals, HVAC, and industrial environments
  • Strict quality control system to ensure stable and reliable product performance
  • Strong OEM/ODM customization capability to support diverse project requirements and engineering applications
  • Complete customer service, including careful packaging, fast delivery, and reliable after-sales support

Our Export Markets

  • North America: United States, Canada
  • South America: Brazil, Argentina, Chile, etc.
  • Europe: Spain, France, Germany, Netherlands, Russia, etc.
  • Asia and Oceania: Vietnam, Thailand, India, Australia, etc.
  • A total of 50 countries

About Us

  • With more than 20 years of industry experience, we focus on the R&D and manufacturing of air filtration, air distribution, and cleanroom equipment, providing stable and reliable clean air system solutions for global customers while supporting OEM/ODM customization services.
  • Large-scale production capability and strict quality control enable us to meet bulk order requirements and urgent delivery schedules, ensuring stable supply.
  • Our professional engineering team provides full-process services from solution design and product selection to production delivery and after-sales support, helping customers build long-term and stable partnerships.

About Our Factory and Business Background

Address: No. 458 Jiangping Road, Jingjiang City, Jiangsu Province, China

Payment Terms: L/C, T/T, D/P

International Trade Terms: FOB, CFR, CIF, DAP, EXW

Average Lead Time: Peak season: one month; off season: within 15 working days

Nearest Port: Shanghai

Our Production Capacity and Technical Expertise

  • We provide a complete range of air filtration grades (G3-H14), air distribution products (air dampers and diffusers), and customized clean air system solutions for HVAC and cleanroom applications.

Our Industry Experience and Global Business Record

  • Export Year: 2010
  • Main Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Middle East, East Asia, Western Europe

Get a Free Custom Quote

Looking for a reliable supplier of air filtration, air distribution, or cleanroom system products? We provide factory-direct pricing, customized OEM/ODM services, and complete engineering project solution support.

Submit your requirements, and our engineering team will provide a dedicated solution and quotation within 12 hours, including detailed product specifications and delivery lead time.