ASHRAE Fiberglass Mini-pleat Filters

  • Filtering range: 1㎛~3㎛ of tiny particles can be effectively filtered.
  • Filtering efficiency: Filtering efficiency reaches 65~95%, improving indoor air quality.
  • Long-term use: Replacement frequency of 6-8 months, saving maintenance costs. (Replacement time depends on environmental requirements)
  • Application Scenario: Suitable for air conditioning systems, factories, residential, commercial and industrial areas.

ASHRAE Glassfiber Mini-pleat Filters

Designed to filter particles from 1 to 3 microns, the Medium Efficiency Fine Folding Filter is highly efficient at capturing small airborne particles, including dust, pollen and other microscopic pollutants. The well-designed fine-folding structure achieves low wind resistance and ensures that particles are filtered without causing airflow problems.
Excessive resistance to maintain good ventilation.
This sub-high efficiency filter is suitable for a wide range of air conditioning, ventilation and air purification systems, and can be used in offices, commercial premises, medical institutions, etc. to provide a comprehensive air purification solution.

High filtration area: The fine folding design significantly increases the surface area of the filter, providing greater air throughput, which not only improves the filtration efficiency, but also helps to disperse the air pressure, thus reducing the wear and tear on a single point and prolonging the overall life of the filter.

Special Material Application: Although the glass fiber itself may be fragile, the overall structure of the filter is strengthened through advanced manufacturing processes and structural design to enhance its stability and durability during use.



Frame: Paper Frame, Galvanized Frame, Aluminum Frame
Media: Human Fiber or Glass Fiber
• M6 (EN 779) 60-80% / MERV11-12 (ASHRAE 52.2)
• F7 (EN779) 80-90% / MERV13 (ASHRAE 52.2)
• F8 (EN 779) 90-95% / MERV14 (ASHRAE 52.2)
Adhesive: white glue
Fire retardant grade: UL900
Max. Temperature: ≦70°C
Max. Humidity: ≦100% RH
Rec. Final Pressure Drop: ≦350 Pa


✔ Excellent dust catching power
✔ High efficiency, low pressure loss
✔ Stable and good filtration effect
✔ Reduce equipment maintenance costs
✔ Long lasting and easy to replace


Medicine, Business, Telecommunications, Construction
Other industries, various types of air-conditioning box installations

  1. High Efficiency Filtration: The Sub-High Efficiency Foldscape Filter stands out for its superior filtration performance. Designed with state-of-the-art filtration materials, it effectively removes particles, dust, pollen, bacteria and other pollutants from the air, ensuring that the air you breathe is as clean as it can be.
  2. Long Lifespan: To ensure the reliability and longevity of the product, the Sub-High Efficiency Foldscape Filter is made of high quality, durable materials. Its superior durability and long service life reduces the frequency of filter changes, saving you time and money.
  3. Low Resistance and Efficient Ventilation: Compared with traditional filters, the low resistance design of the primary air filter ensures efficient air ventilation and maintains good air flow. This not only improves air purification, but also reduces energy consumption, making your living environment more environmentally friendly.
  4. East to Install and Maintain: The design of the Sub-High Efficiency Foldscape Filter is user-friendly and easy to install. At the same time, its removable and washable features make the maintenance process easier. You can easily keep the filter clean to ensure continuous high filtration efficiency.
  5. Multi-Purpose Applications: Sub-HEPA filters are widely used in a variety of venues, including homes, offices, commercial spaces and more. Its multi-functional application nature ensures the fulfillment of different needs and provides a fresh and comfortable environment for various places.

Primary air filters create a new purification experience for you with their high filtration performance, long service life, low resistance and high efficiency ventilation, easy installation and maintenance, and versatile applications.

ASHRAE Fiberglass Mini-pleat Filters Specification Sheet
Nominal SizeActual SizeMedia AreaFilter Rating Air FlowInitial P.D.Rec. Final P.D.
 WxHxD (mm)  WxHxD (mm)  Area (m²) (EN779:2012)CFMCMHIn W.G.PaPa
24x24x2595x595x457.40M6120020390.3690≤ 350
(1.4 In W.G.)

◆ Face Velocity: 1.6 m/s
◆ Pressure Drop Tolerance: ±15%
◆ Other sizes are available upon request。