High Efficiency H13 Mini Pleated HEPA Filter - Quality Air Filtration from China Suppliers and Factory
Product Overview
Mini pleat HEPA filters are designed for terminal filtration in ventilation equipment, dust removal systems, and air supply systems that require high cleanliness. The advanced mini-pleat design and structure ensure effective filtration of airborne particles, suitable for a variety of applications where air quality is critical.
The H13 mini pleated HEPA filter from Guangzhou LJF delivers certified ≥99.95% efficiency at MPPS per EN 1822, with a large specific surface area, even pleat spacing, and stable airflow. Its compact, low-resistance construction saves installation space in FFU grids and AHU terminal housings while keeping energy costs down.
Every HEPA filter is individually tested for integrity before shipment and can be supplied with a test certificate. Choose from seven standard LY-M-H models or request special sizes, with H14 (≥99.995%) also available for stricter requirements.
Key Features
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Large specific surface area — the mini-pleat design provides a larger dust-collecting surface, enhancing overall dust-holding capacity
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Even pleat spacing — ensures consistent airflow and filtration efficiency across the entire filter surface, preventing airflow restriction
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Stable airflow — maintains steady airflow essential for efficient ventilation and air distribution systems
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High filtration efficiency — H13 ≥99.95% at MPPS per EN 1822, capturing dust, pollen, and other airborne pollutants
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Low resistance — minimizes airflow resistance, improving energy efficiency and reducing operating costs
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High temperature resistance — withstands temperatures up to 80 °C for reliable performance
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Moisture resistance — operates effectively in relative humidity up to 100% RH, adapting to different conditions
Technical Specifications
| Model | Outside Size W×H×D (mm) | Rated Airflow (m³/h) | DHC (g) | I.N.P (Pa) | F.N.P (Recommended) |
| LY-M-H | 1220×610×100 | 2600 | 1600 | ≤220 | 99.999% @0.3μm |
| LY-M-H | 915×610×90 | 1900 | 1200 | ≤220 | 99.999% @0.3μm |
| LY-M-H | 610×610×80 | 1300 | 800 | ≤220 | 99.999% @0.3μm |
| LY-M-H | 915×610×69 | 1500 | 950 | ≤220 | 99.999% @0.3μm |
| LY-M-H | 610×610×69 | 1000 | 700 | ≤220 | 99.999% @0.3μm |
| LY-M-H | 915×610×50 | 1100 | 750 | ≤220 | 99.999% @0.3μm |
| LY-M-H | 610×610×50 | 700 | 450 | ≤220 | 99.999% @0.3μm |
Note: Special sizes available upon request.
Specification
| Parameter | Specification |
| Efficiency | H13 ≥99.95% @MPPS (EN 1822); H14 ≥99.995% optional |
| Media | Ultra-fine glass fiber paper |
| Pleat type | Mini-pleat (separator-less), even pleat spacing |
| Max operating temperature | ≤80 °C |
| Max relative humidity | ≤100% RH |
| Frame material | Aluminum / galvanized steel / MDF |
| Sealant | Polyurethane (PU) |
| Testing | Individual aerosol test (DOP/PAO) per EN 1822 |
Applications
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Ventilation equipment — HVAC systems requiring high cleanliness levels
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Dust removal equipment — effectively captures fine dust in industrial environments
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Air supply systems — cleanrooms, laboratories, and medical facilities
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Terminal filtration — for spray booth supply air and AHU systems
Maintenance & Service Life
• Replace the HEPA filter when pressure drop reaches the final resistance (typically 2× initial or the rated limit) or when particle monitoring indicates leakage.
• Protect the HEPA with proper pre-filtration (G4/F5–F7 stages) — this extends HEPA service life significantly.
• Handle filters by the frame only; avoid touching the media pleats during installation.
Why Choose Guangzhou LJF
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Individually tested performance — certified HEPA filtration quality you can verify
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Custom size & frame options — designed to fit existing housings and FFU grids seamlessly
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Factory-direct pricing — stable supply chain and pricing for engineering projects and bulk orders
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10+ Years experience — trusted partner serving cleanroom, electronics, and pharmaceutical clients
Product FAQ
Q1 What does H13 mean in HEPA classification?
H13 is a HEPA grade per EN 1822 with minimum efficiency of 99.95% at MPPS (Most Penetrating Particle Size). H14 offers ≥99.995%. The required grade depends on your cleanliness class (ISO 14644).
Q2 What is the advantage of mini-pleat design?
Mini-pleats pack more media surface area into the same frame size, delivering lower pressure drop and longer service life than standard deep-pleat designs — while using a slimmer, lighter frame.
Q3 Are your HEPA filters tested individually?
Yes, each filter is individually tested for efficiency and leaks using aerosol challenge (DOP/PAO) per EN 1822, and can be supplied with a test certificate.
Q4 How long does an H13 HEPA filter last?
Service life depends on pre-filtration and operating environment. With proper G4/F7 pre-filtration, HEPA filters typically last 1–3 years in cleanroom duty; monitor pressure drop for replacement timing.
Q5 What frame materials and customization options are available?
Available frame materials include Aluminum, Galvanized Steel, and MDF. Custom sizes, non-standard dimensions, and H14 (≥99.995%) efficiency options are available upon request.
Q6 When should the HEPA filter be replaced?
Replace the HEPA filter when pressure drop reaches the final resistance (typically 2× initial or the rated limit) or when particle monitoring indicates leakage.