Mini-Pleat HEPA Filter

The partitionless high-efficiency filter is a high-efficiency filtration device used at the end of the clean air system. It uses ultra-fine glass fiber filter paper and hot melt adhesive separation technology (mini-pleat structure) to form a stable and uniform air duct structure without the need for traditional metal or paper partitions.

The product is mainly used to remove tiny particles of 0.3μm and above in the air. It is widely used in pharmaceutical clean rooms, hospital operating rooms, electronic semiconductor workshops, biological laboratories and high-level HVAC air purification systems. It is one of the most commonly used high-efficiency filtration solutions in modern clean engineering.

It is made of densely pleated ultra-fine glass fiber filter paper and has a partition-less structural design. It is compact in size and has high filtration accuracy. It is the core filter element at the end of the clean space.

Product features: Use 0.1 micron MPPS testing instrument for performance testing, product quality is guaranteed; produced in a class 10,000 clean factory, no volatile dust; using high-quality HV filter material, stable efficiency, low resistance, long service life; small size, saving installation space; high strength, light weight, easy to install.

Performance parameters: Full efficiency test (0.1-0.2μm): 99.9995%; Most penetrating particle size scanning method (MPPS), filtration level: U15;


Filter material: glass fiber filter paper

Frame: frosted aluminum profile

Dividers: hot melt glue

Working temperature: -20~70℃

Working humidity: ≤99%


Dimensional diagram:

mini-pleat-high-efficiency-filter.webp


Model specificationsDimensions (A*B*C)Rated air volumeInitial resistance



H13H14H15
BY-WG 570*570*69570*570*69500100120200
BY-WG 1170*570*691170*570 *691000100120200
BY-WG 1170*870*691170*870*6915001 00120200
BY-WG1170*1170*691170*1170*692000100120200
BY-WG 1495*1295*691495*1295*693100100120200
BY-WG 610,610*69610*610*691000190210240
BY-WG1 220*610*691220*610*692000190210240
BY-WG 320*320*80320*320*80300160180210
BY-WG 484*484*80484*484*80600160180210
BY-WG 630*630*80630*630*801100160180210
BY-WG 305*610*80305*610*80500160180210
BY-WG 610*610*80610*610*801000160180210
BY-WG 915*610*80915*610*801500160180210
BY-WG 1220*610*801220*610*802000160180210
BY-WG 320*320*93320*320*93300150160200
BY-WG 484*484*93484*484*93600150160200
BY-WG 630*630*93630*630*931100150160200
BY-WG 610*610*93610*610*931000150160200
BY-WG 915*610*93915*610*931500150160200
BY-WG 1220*610*931220*610*932000150160200
BY-WG 400*400*93400*400*93500190220270
BY-WG 550*550*93550*550*931000190220270
BY-WG 660*660*93660*660*931500190220270
BY-WG 320*320*95320*320*95300150160200
BY-WG 484*484*95484*484*95600150160200
BY-WG 630*630*95630*630*951100150160200
BY-WG 610*610*95610*610*951000150160200
BY-WG 915*610*95915*610*951500150160200
BY-WG1 220*610*951220*610*952000150160200
BY-WG 400*400*95400*400*95500190220270
BY-WG 550*550*95550*550*951000190220270
BY-WG 660*660*95660*660*951500190220270


Why Choose Mini-Pleat HEPA Filters

  • Lower Operating Resistance

    The mini-pleat structure optimizes airflow paths, reducing system pressure loss and energy consumption.

  • Larger Filtration Area

    Provides a larger filtration area within the same dimensions, increasing dust-holding capacity and service life.

  • Lightweight Structure

    The design eliminates metal separators, reducing overall weight and simplifying installation.

  • High Filtration Efficiency

    Achieves H13/H14 filtration performance to meet stringent air cleanliness requirements.

  • Suitable for Energy-Efficient Systems

    Well suited to modern energy-efficient HVAC and variable air volume (VAV) systems.

  • Stable and Reliable

    Hot-melt adhesive spacers support the filter media, maintaining its shape during long-term operation.

Key Features

  • Separator-free mini-pleat structure

  • Ultra-low operating resistance

  • High filtration efficiency: H13–H14

  • Efficient capture of 0.3 μm particles

  • Lightweight design

  • Large filtration area

  • Energy-efficient and environmentally friendly

  • OEM/ODM customization available

Typical Applications

  • Pharmaceutical Cleanrooms

    Used for specified terminal filtration stages in production, filling, and packaging areas. Confirm filter class, rated airflow, sealing, and installed leak-testing requirements according to project specifications.

  • Hospitals and Healthcare Facilities

    Can be used in designated filtration stages serving operating rooms and clean wards. Verify ventilation requirements, installation dimensions, allowable pressure drop, and maintenance access.

  • Electronics and Semiconductor Industries

    Used in clean air systems for electronics assembly and semiconductor-related production. Specify particle control targets, operating airflow, filter class, and material cleanliness requirements.

  • Biological and Research Laboratories

    Can be used for laboratory supply or exhaust filtration according to the design. Confirm housing sealing, leak-testing conditions, and safe replacement arrangements based on containment requirements.

  • Food Processing and Precision Manufacturing

    Used for terminal particulate filtration in areas requiring controlled air cleanliness. Specify hygiene requirements, temperature, humidity, and cleaning conditions to confirm media and frame configurations.

  • Data Centers

    Can be used in equipment or air treatment units where HEPA filtration is explicitly required. Verify particle control needs, available fan pressure, and airflow before replacing conventional filters.

Product Advantages

  • Energy-Efficient Filtration

    The low-resistance design significantly reduces fan energy consumption.

  • Longer Service Life

    A larger filtration area provides greater dust-holding capacity.

  • Lightweight Construction

    The separator-free design reduces weight and simplifies installation and maintenance.

  • High Reliability

    Suitable for clean air systems operating continuously.

  • Flexible Customization

    Available in various dimensions, efficiency classes, and frame materials.

Optional Configurations

  • H13 Filter Class

    Confirm H13 classification and the test standard according to project requirements. Verify model-specific efficiency data, test airflow, and individual filter test documentation.

  • H14 Filter Class

    For filtration locations where H14 is specified. Confirm pressure drop at actual airflow, fan capacity, sealing, and installed leak-testing requirements.

  • ABS Frame

    Suitable for equipment projects specifying plastic frames. Confirm operating temperature, structural strength, dimensional tolerances, and project flame-retardancy requirements.

  • Aluminum Alloy Frame

    Suitable for equipment with weight and installation requirements. Verify profile dimensions, frame strength, mounting methods, and sealing compatibility.

  • Galvanized Steel Frame

    Available for compatible air handling units and filter housings. Confirm frame thickness, site corrosion conditions, installation dimensions, and mounting methods before ordering.

  • Double-Sided Sealing

    Double-sided gaskets can be configured according to housing requirements. Specify gasket material, position, thickness, and compression, and verify sealing surfaces and clamping arrangements.

  • High-Temperature Version

    Provide continuous temperature, peak temperature, and exposure duration. Confirm the temperature limits of the media, hot-melt adhesive, sealant, gaskets, and frame together.

  • Low-Resistance Configuration

    Assess media area and pleat configuration according to design airflow and allowable pressure drop. Compare data at the same efficiency class, dimensions, and airflow.

  • OEM Branding

    Custom dimensions, labels, packaging, and branding are available. Provide technical drawings, testing requirements, quantity, and delivery schedules to confirm the production plan.

Our Advantages

  • Professional HEPA Manufacturer

    Focused on the development and manufacture of high-efficiency and ultra-high-efficiency air filtration products.

  • Strict Quality Control

    Each filter undergoes efficiency and leak testing.

  • Extensive Cleanroom Project Experience

    Products are widely used in pharmaceutical, healthcare, electronics, and scientific research applications.

  • Fast Delivery

    Standard models are well stocked, with bulk supply available for projects.

  • OEM/ODM Services

    Supporting customized cooperation with global brands and engineering projects.

Frequently Asked Questions (FAQ)

  • What Is the Difference Between Mini-Pleat and Separator-Type HEPA Filters?

    Mini-pleat filters offer lower resistance and lighter weight, making them well suited to modern energy-efficient HVAC systems. Separator-type filters are more suitable for high-airflow and demanding operating conditions.

  • Are They Suitable for Operating Rooms?

    Yes. They are widely used for terminal filtration in hospital operating rooms and clean healthcare systems.

  • What Filtration Efficiency Can They Achieve?

    They typically achieve H13 or H14 classification, corresponding to efficiencies of 99.95%–99.995%.

  • Are Custom Dimensions Available?

    Yes. Filters can be manufactured according to project requirements.

  • Is OEM Cooperation Available?

    Yes. Both OEM and ODM services are available.

Request a Quote

Looking for mini-pleat HEPA filters for AHUs, FFUs, or cleanroom air conditioning systems?

Please provide the following information for selection and quotation:

  • Filter dimensions: External frame length × width × depth, installation opening, and mounting method. Attach existing filter photos or drawings for replacement projects.

  • Filter class: Required H13 or H14 classification, test standard, and individual test report requirements.

  • Airflow and pressure drop: Design airflow per filter, allowable initial pressure drop, specified final pressure drop, and available fan static pressure.

  • Sealing requirements: Specify gasket or gel-seal requirements, installation interfaces, and leak-testing requirements. The construction should be confirmed according to the equipment.

  • Operating conditions: Application area, operating hours, temperature, humidity, condensation conditions, and special cleaning requirements.

  • Purchase quantity: Current quantity, sample requirements, future replacement plans, packaging, and delivery schedule.

Our engineers will provide selection recommendations and a quotation within 12 hours.

Contact Us Now

Looking for a reliable manufacturer of air filtration, air distribution, and cleanroom equipment? We provide high-quality products, competitive factory pricing, and flexible OEM/ODM customization services for global customers, meeting the diverse needs of industrial, medical, cleanroom, and HVAC projects.

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Inspection & Compliance Documents

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

Our Workshop

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.