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The Jyntrel washable primary efficiency filter is a reusable pre-filter built for high-volume air handling systems. It captures large dust particles, lint, fibres and insects before they reach downstream coils or higher-efficiency filters. The filter is aimed at facility managers, HVAC contractors and OEMs who need a robust, low-maintenance first stage in commercial, industrial or process-air systems.
In a typical installation, the filter sits in the fresh-air intake or pre-filter rack of an air handling unit, where face velocity is highest and dust loads are heaviest. Jyntrel rates this filter for a nominal face velocity of 2.5 m/s, a duty point chosen for large-airflow industrial ventilation systems. At that velocity, the PET (polyester) media and aluminium frame are designed to hold their shape without bypass or vibration, so the air path stays stable across the filter face.
The filter is intended for environments where humidity and dust are part of normal operation: workshops with heavy particulate, exhaust air with high moisture content, and central air intakes in commercial buildings. Because the media is water-washable, the filter can be cleaned and returned to service instead of being discarded, which suits sites where disposable pre-filters would be replaced frequently.
For system designers, the key point is that this is a pre-filter, not a final filter. It reduces the load on downstream G4/F7 or HEPA stages, helping to extend their service intervals. The aluminium frame resists corrosion and is dimensionally stable, so the filter can be fitted into standard holding frames or filter racks without additional sealing measures.
The filter is available in G3, G4 and M5 efficiency classes, covering the primary and medium pre-filtration range. In the G3 and G4 grades, the media provides a high-efficiency barrier for particles of 5 µm and larger, capturing more than 80% of such particles in the primary grade. This performance is intended to protect heat exchangers, fans and ductwork from fouling while keeping pressure drop low at the rated airflow.
The media is a high-throughput, abrasion-resistant PET mesh. It is designed to withstand repeated washing cycles; under normal operating conditions, the filter can be washed 5–8 times, with a single service life of about 2–3 months and an overall lifespan of 12–18 months, depending on dust loading and maintenance frequency. Compared with disposable filters, this reduces total cost of ownership for high-dust sites.
The high-strength aluminium frame is corrosion-resistant and resistant to compression, so the filter maintains a tight seal in the holding frame and does not leak unfiltered air around the edges. The combination of low resistance and high airflow capacity makes the filter suitable for retrofit projects where fan capacity is fixed and additional pressure drop must be minimised.
To recommend the right configuration, Jyntrel needs the operating conditions of your system. Please provide the device or vehicle model (where applicable), the required filter dimensions or a drawing, the design airflow or water flow, and the operating environment (temperature, humidity, dust type). Quantity and target efficiency grade help us confirm the most suitable media and frame combination.
Jyntrel supports OEM and ODM projects: non-standard sizes, thicknesses and efficiency grades can be produced to your specification. With over 1,000 filter solutions developed, the engineering team can adapt frame material, media weight, protective mesh, logo printing and packaging. Standard sizes are listed in the parameters table; custom sizes are quoted on request.
| Item | Detail |
|---|---|
| Product name | Washable primary efficiency air filter (washable primary/medium filter) |
| Efficiency class | G3 / G4 / M5 |
| Media | High-throughput, abrasion-resistant PET (polyester) filter mesh |
| Frame | Corrosion-resistant aluminium frame |
| Rated operating face velocity | 2.5 m/s, optimised for large-airflow industrial ventilation systems |
| Core applications | Industrial HVAC systems, high-humidity exhaust air, pre-filtration in heavy-dust workshops, central air intakes in commercial buildings |
| Standard sizes (W × H × D) | 12×24×2 in (289 × 594 × 46 mm); 16×20×2 in (390 × 492 × 46 mm); 20×20×2 in (492 × 492 × 46 mm); 20×24×2 in (492 × 594 × 46 mm); 24×24×2 in (594 × 594 × 46 mm) |
| Customisation (OEM/ODM) | Non-standard sizes, thicknesses and efficiency grades; produced in a 50,000 m² plant with a CNAS-accredited laboratory; ISO/IATF16949 certified |
The filter is used across commercial and industrial air systems where dust and moisture are present. Common installations include:
In each case, the filter acts as a first line of defence, protecting downstream equipment and extending the life of finer filters.
Jyntrel operates multiple automated production lines with a monthly capacity of several million pieces, which supports stable supply for large projects and recurring orders. The company has more than 20 years of experience in filter development and manufacturing, and has been exporting to markets in Europe, the United States, Japan and South Korea for over 20 years.
The production base covers 50,000 m², including 6 clean workshops totalling 20,000 m². Quality control follows IQC, IPQC and OQC procedures through the whole process. The on-site laboratory is CNAS-accredited and can issue test reports for filtration efficiency, dust holding capacity and resistance. The company holds ISO 9001, ISO 14001 and ISO 45001 certifications, and has been certified to IATF 16949 (automotive quality management) since 2024. Products comply with REACH and RoHS environmental regulations, and compliance documents are available. Jyntrel is located in Zhongshan, Guangdong, China.
To receive a tailored solution, please send us the following details through our contact page: device or vehicle model, required size or drawing, airflow or water flow, operating conditions (temperature, humidity, dust type), and estimated quantity. Our engineering team will review your data and respond with a recommendation and quotation. Contact Jyntrel to start the conversation.
Yes. The filter is rated for a nominal face velocity of 2.5 m/s, which is typical for large-airflow industrial ventilation systems. At this velocity, the aluminium frame and PET media are designed to remain stable and maintain a low pressure drop. Higher velocities may require a larger filter face area to keep resistance within the fan's capability.
We need the design airflow (in m³/h or cfm), the expected dust loading, and the operating temperature and humidity. This information allows us to recommend the correct efficiency grade (G3, G4 or M5) and size to match your system's pressure budget. Please also indicate the available space or frame dimensions.
The filter is available in G3, G4 and M5 classes. In the G3 and G4 grades, it captures more than 80% of particles of 5 µm and larger, making it suitable as a pre-filter ahead of finer stages. This helps protect downstream coils and high-efficiency filters from dust build-up.
Yes. Jyntrel supports OEM and ODM projects with custom sizes, thicknesses and efficiency grades. We can also adjust frame material, media weight, protective mesh, logo printing and packaging. Please provide a drawing or sample, and our engineering team will confirm feasibility.
For standard sizes, the MOQ is typically 500–1,000 pieces, while custom specifications can be negotiated based on the project. Our automated lines can handle large volumes, with a monthly capacity of several million pieces. Contact us with your requirements for a specific MOQ proposal.
Free samples are usually ready in 5–7 working days (excluding custom tooling). Bulk orders are typically delivered 20–30 days after order confirmation, depending on quantity and specification. Our production capacity supports urgent replenishment requests.
We recommend monitoring the pressure drop. When the resistance rises to twice the initial value (typically around 250 Pa), the filter should be washed. Wash with clean water or a mild neutral detergent from the clean air side, at a water temperature of 40°C or below, and allow it to dry completely before reinstallation. Under normal conditions, the filter can be washed 5–8 times, with a total lifespan of 12–18 months.
Yes. Standard-size samples are available free of charge (freight collect), and custom samples may incur a small tooling fee that is refundable against bulk orders. Our CNAS-accredited laboratory can also provide performance comparison test reports to support your selection process.