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Hepa Filter (Mini Pleat)

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Rayshen’s High-Capacity Mini-Pleat Filters are designed to deliver exceptional pre-filtration performance for cleanrooms and HVAC systems. Built with high-efficiency pleated media, these filters come with durable frame options including premium plastic, galvanized steel, or aluminum. The filter media, made from ultra-fine synthetic fibers or glass fibers, ensures reliable particle capture and consistent air quality. With a large filtration surface area, they provide low initial resistance, long service life, and high dust-holding capacity. Their compact and lightweight construction allows for easy installation and maintenance, making them a dependable choice for demanding environments such as pharmaceutical production, electronics manufacturing, food processing, and other precision-controlled spaces. Rayshen’s High-Capacity Mini-Pleat Filters are designed to deliver exceptional pre-filtration performance for cleanrooms and HVAC systems. Built with high-efficiency pleated media, these filters come with durable frame options including premium plastic, galvanized steel, or aluminum. The filter media, made from ultra-fine synthetic fibers or glass fibers, ensures reliable particle capture and consistent air quality. With a large filtration surface area, they provide low initial resistance, long service life, and high dust-holding capacity. Their compact and lightweight construction allows for easy installation and maintenance, making them a dependable choice for demanding environments such as pharmaceutical production, electronics manufacturing, food processing, and other precision-controlled spaces.

Model Efficiency Grade Dimensions (W*H*D mm) Filtration Area (m) Rated Airflow (m/h) Initial Resistance / Airflow (Pa/m/h)
FSTMZ/P66-F7 F7 592*592*292 18.8 1000 85/2500 , 135/3600 , 145/5000
FSTMZ/P36-F7 F7 287*592*292 8.4 2000 50/1250 , 50/1800 , 145/2500
FSTMZ/P56-F7 F7 490*592*292 15.4 3000 50/1250 , 185/3000 , 145/4000
FSTMZ/P66-F6 F6 592*592*292 19 3600 35/2500 , 65/3600 , 110/5000
FSTMZ/P36-F6 F6 287*592*292 8.5 1800 35/1250 , 65/1800 , 110/2500
FSTMZ/P56-F6 F6 490*592*292 15.6 3000 35/2500 , 65/3000 , 110/4000

Note: Custom sizes available upon request.

Key Features:

Efficiency Grades: F6 to F7 (EN 779 / ISO 16890 standards)

Rated Airflow: 1000 to 3600 m³/h

Frame Options: Plastic, galvanized steel, or aluminum

Filter Media: Ultra-fine synthetic fiber or glass fiber

Low Resistance: Reduces energy consumption

Non-Toxic Materials: Safe for critical cleanroom applications

By capturing larger airborne particles, Mini-Pleat Filters serve as effective pre-filters for HEPA systems, reducing the burden on final stage filters and enhancing overall system efficiency. Their rugged construction ensures reliable performance even under high-volume air conditions, making them a cost effective and dependable choice for maintaining clean, efficient airflow.

Mini Pleat HEPA Filter: The Ultimate Guide to H13 & H14 Air Filtration for Cleanrooms

In modern industrial manufacturing and high-stakes healthcare, the difference between a successful batch and a catastrophic contamination event often comes down to a few microns. As a premier Mini Pleat HEPA Filter Manufacturer, Rayshen Engineering provides the technical precision required to safeguard your facility’s air integrity.

Our Mini Pleat HEPA Filters are engineered using advanced hot-melt separation technology, providing a larger surface area in a more compact frame than traditional deep-pleat filters. Whether you are searching for an H13 Mini Pleat HEPA Filter in India for a pharmaceutical suite or high-velocity H14 High Efficiency HEPA Filters for a semiconductor fab, this guide details why Rayshen is the industry standard for air purity.

Engineering Excellence: What Makes a Mini Pleat HEPA Filter?

The term "HEPA" (High-Efficiency Particulate Air) is not just a label; it is a performance standard. To qualify as a HEPA filter, the unit must remove at least 99.97% of particles as small as 0.3 microns. At Rayshen, we push these boundaries.

The Role of Micro-Glass Fiber Media

At the heart of every Rayshen filter is ultra-fine micro-glass fiber media. Unlike synthetic alternatives, glass fiber provides:


  • Inertness: Resistant to chemical degradation in laboratory environments.
  • Consistency: Maintains efficiency even under fluctuating humidity levels.
  • Fine Capture: Capable of trapping bacteria, viruses, and sub-micron particulates through diffusion and interception.

Mini-Pleat vs. Deep-Pleat: The Technical Shift

Traditional HEPA filters use aluminum separators to keep pleats apart. Rayshen’s Mini Pleat HEPA Filter utilizes hot-melt thermoplastic spacers. This "Mini Pleat" design allows us to pack up to 3x more filter media into the same frame depth. The result?


  • Higher Dust Holding Capacity (DHC): Longer intervals between replacements.
  • Lower Initial Resistance: Significant reduction in energy consumption for your Air Handling Units (AHU).

Technical Specifications & Standards (EN 1822)

As a professional Cleanroom HEPA Filter Supplier, we strictly adhere to the EN 1822:2019 standard, which is the global benchmark for testing high-efficiency air filters.

ParameterH13 Grade (Standard)H14 Grade (Premium)
Global Efficiency≥ 99.95%≥ 99.995%
Local Efficiency (MPPS)≥ 99.75%≥ 99.975%
Typical Initial Pressure Drop110 – 130 Pa140 – 160 Pa
Recommended Final Resistance500 Pa600 Pa
Frame Material OptionsAnodized Aluminum / SS 304Anodized Aluminum / SS 316
Gasket TypeNeoprene / EPDM / Gel SealLiquid Gel Seal / PU Foam


Why Rayshen is the Leading H13 Mini Pleat HEPA Filter Manufacturer in India

The Indian manufacturing landscape, especially in Pharma hubs like Baddi, Ahmedabad, and Hyderabad, demands filters that can withstand tropical humidity while maintaining ISO Class 5 standards.


1. Advanced Leak Testing (DOP/PAO)

Every single H14 High Efficiency HEPA Filter leaving our facility undergoes a Dispersed Oil Particulate (DOP) or Polyalphaolefin (PAO) integrity test. We don't just batch-test; we individual-test. Each filter comes with a unique serial number and a scan-test report confirming zero leaks.

2. Custom Fabrication for HVAC Consultants

We understand that not every Mini Pleated Air Filter for AHU is standard. We manufacture custom depths (50mm, 69mm, 90mm, and 150mm) to ensure a perfect fit in existing terminal housings or Fan Filter Units (FFU), eliminating the need for expensive duct modifications.

Industry-Specific Applications

Our filtration solutions are tailored to the specific regulatory requirements of high-tech industries.


1. Pharmaceutical and Biotechnology

In sterile filling areas, air must be free of viable and non-viable particulates. Our H14 Mini Pleat HEPA filters are critical for:


  • Aseptic Filling Suites: Ensuring Grade A air quality.
  • Biosafety Cabinets (BSC): Protecting laboratory personnel from hazardous pathogens.
  • Pass Boxes: Preventing cross-contamination during material transfer.

2. Hospitals and Healthcare

Rayshen is a trusted Cleanroom HEPA Filter Supplier for the medical sector.


  • Positive Pressure Isolation Rooms: Protecting immunocompromised patients.
  • Negative Pressure Rooms: Containing airborne infectious diseases (like COVID-19 or TB).
  • Modular Operation Theaters (OT): Maintaining ultra-clean laminar flow over the surgical site.


3. Electronics and Semiconductor Fab

Even a single speck of dust can ruin a silicon wafer. Our Mini Pleated Air Filters for AHU provide the ISO Class 3 and 4 purity levels required for sub-micron chip manufacturing.


Energy Efficiency and ROI: The B2B Perspective

For a facility manager, a HEPA filter is an operational expense. However, Rayshen’s mini-pleat technology turns this into a cost-saving investment.


  • Reduced Static Pressure: Because our pleat geometry is optimized, the AHU fan doesn't have to work as hard. This can reduce annual electricity costs for cleanroom ventilation by up to 15-20%.
  • Filter Longevity: With a higher surface area, our filters take longer to "clog," meaning your maintenance downtime is cut in half.

Expert Installation and Validation (E-E-A-T)

Expertise isn't just about making the filter; it’s about ensuring it works in situ. Rayshen provides end-to-end support:


  • Selection: Helping consultants choose between Gasket Seal vs. Gel Seal based on ceiling grid types.
  • Installation: Ensuring no damage occurs to the fragile micro-glass media during the "push-fit" process.
  • Validation: Assisting in HEPA Filter Integrity Testing as part of IQ/OQ/PQ protocols for GMP audits.

Conclusion: Partner with Rayshen for Pure Air

Selecting a Mini Pleat HEPA Filter Manufacturer is about choosing a partner in safety. With Rayshen’s commitment to EN 1822 standards, individual leak testing, and energy-efficient designs, you are ensuring the highest level of protection for your products and people.


 Secure Your Facility Today

Need a custom quote for your HVAC project? Contact Rayshen’s technical team for a detailed consultation on H13/H14 filtration solutions.


Call Us: +91-9359096079

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Frequently Asked Questions

A high-quality Mini Pleat HEPA Filter is defined by its ability to capture at least 99.97% to 99.995% of particles at 0.3 microns. It uses hot-melt separator technology instead of traditional aluminum partitions, which provides a larger surface area, lower pressure drop, and superior airflow, making it ideal for critical cleanroom environments.
As a leading Mini Pleat HEPA Filter Manufacturer, Rayshen offers precision-engineered filtration solutions that strictly adhere to EN 1822 standards. We provide individually leak-tested filters, custom sizing options, and rapid delivery across India and global markets, ensuring you receive a reliable, high-performance product tailored to your facility's specific needs.
The primary difference lies in filtration efficiency. An H13 H14 High Efficiency HEPA Filter captures 99.995% of particles at the Most Penetrating Particle Size (MPPS), whereas an H13 grade captures 99.95%. For ultra-sterile applications like pharmaceutical fill-finish lines or semiconductor manufacturing, the H14 grade is the industry benchmark for maximum protection.
Yes, our Mini Pleated Air Filter for AHU (Air Handling Units) is specifically designed for terminal HVAC systems. Its compact depth and low-resistance design make it perfect for retrofitting existing AHU setups or integrating into new cleanroom ventilation designs, helping to maintain laminar flow while reducing energy consumption.
Absolutely. Rayshen is a trusted Cleanroom HEPA Filter Supplier for the pharmaceutical, biotech, and healthcare sectors. We understand the stringent GMP and ISO 14644 compliance requirements. Every filter we supply undergoes rigorous DOP/PAO leak testing to ensure absolute integrity in your sterile zones.
Rayshen is one of the most reliable sources for an H13 Mini Pleat HEPA Filter in India. We combine state-of-the-art manufacturing with robust logistics to supply pharma hubs, hospitals, and electronics manufacturers across the country, ensuring your cleanroom projects stay on schedule and compliant.
The service life of a HEPA filter depends on the cleanliness of the upstream pre-filters and the operating environment. We typically recommend monitoring the pressure drop across the filter using a Magnehelic gauge. When the resistance reaches the final pressure drop limit (usually 450-500 Pa), it is time to replace the unit to maintain optimal air quality.
Yes, as a specialist manufacturer, we offer custom-sized filters. Whether you require specific dimensions for a legacy system or a non-standard frame thickness, we can fabricate a Mini Pleated Air Filter that fits your housing perfectly, ensuring a leak-proof, airtight seal.
Yes. We believe in complete transparency and quality assurance. Every Mini Pleat HEPA Filter manufactured by Rayshen is supplied with a comprehensive test report detailing its efficiency rating, initial pressure drop, and the results of individual scan testing (DOP/PAO test), ensuring full traceability for your audit documentation.
Yes, our H13 and H14 grade filters are highly recommended for hospital operation theaters (OT) and laminar air flow (LAF) benches. They are designed to maintain the sterile, particle-free environment required to protect surgical sites and prevent cross-contamination in critical healthcare areas.
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