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This cylindrical HEPA filter combines high-efficiency particulate capture with granular activated carbon for odour and formaldehyde control. It is designed for desktop and bedside air purifiers, car purifiers, fresh-air modules, and humidifier-purifier units, fitting directly into the device's existing air path. Jyntrel manufactures the filter to your drawing, with HEPA grades from F7 to H13 and flexible sizing. The result is a single drop-in component that handles both particles and gases without adding extra depth to the housing.
In a desktop purifier, the filter sees the full airflow of a small, high-speed fan, often at face velocities higher than those in floor-standing units. The cylindrical shape accepts radial inflow and discharges through the core, so pressure drop across the media is the variable that most affects noise and motor load. Our composite media options—PP, moisture-resistant PP+PET, or PTFE membrane—are selected against the airflow you specify, not against a generic rating. The granular activated carbon bed is positioned in the gas path so that residence time is sufficient for formaldehyde and VOC adsorption without creating a bypass around the HEPA layer. Because the filter is often the last component before the outlet, its dimensional fit and edge sealing directly influence how much air escapes untreated. We therefore treat the housing interface as part of the design brief, not an afterthought.
The filter uses a two-in-one thin composite structure that frees up internal space for the fan and electronics. High-iodine-value coconut-shell granular activated carbon is filled in targeted zones to lock in formaldehyde, while the HEPA layer captures fine particulate. Available HEPA grades run from F7 to H13, and the grade is chosen to match your device's airflow and target clean-air delivery. For applications needing higher efficiency, the construction can be adapted within the same cylindrical format. The media selection also accounts for humidity: PP+PET composite is available where the filter may see moisture from a humidifier function. Every specification is fixed at sample approval, so the performance you test is the performance we reproduce in production.
We do not quote from a catalogue alone. To recommend the right media, carbon loading, and pleat density, we need the device model, the available cavity dimensions or a drawing, the design airflow or water flow (if the unit is a combined humidifier), and the operating conditions—ambient temperature, humidity, and expected contaminant profile. Quantity and target launch date then determine tooling and scheduling. Customisation covers rectangular, cylindrical, and sector or irregular polygonal shapes for small appliances. We can produce any length, width, thickness, and foam sealing edge to match your air duct. If you are still in development, send the CAD envelope and target CADR; we will return a proposed filter drawing and performance estimate. This is a 100% flexible OEM/ODM service, not a fixed-size catalogue.
| Item | Detail |
|---|---|
| Product name | HEPA & Granular Activated Carbon Filter |
| Particulate media | High-precision PP polypropylene / moisture-resistant PP+PET composite / PTFE high-efficiency microporous membrane |
| Gas-phase media | High-iodine-value coconut-shell granular activated carbon / catalyst-modified activated carbon for formaldehyde removal |
| Particulate efficiency | HEPA grade selectable from F7 to H13, targeted to device airflow and purification requirement |
| Common forms | Rectangular panel, cylindrical, sector and irregular polygonal shapes customised for small appliances |
| Main device fit | Desktop/bedside mini air purifiers, car air purifiers, fresh-air ventilation modules, humidifier-purifier combinations |
| Size customisation | 100% OEM/ODM flexible tooling; any length, width, thickness and foam sealing edge to match customer air duct and structure |
| Quality system | ISO 9001, ISO 14001, IATF 16949; CNAS-accredited laboratory controls outgoing quality |
The filter is used in desktop and bedside mini air purifiers, where space is tight and the filter must sit close to the fan. It also serves car air purifiers, fresh-air ventilation modules, and humidifier-purifier combinations. In each case the cylindrical or custom shape follows the device's internal duct, and the carbon layer addresses odours and formaldehyde that a particle-only filter would pass. For appliance brands, the filter can be branded and packed to your specification, including neutral packaging or retail-ready colour boxes.
Jyntrel operates multiple automated production lines with a monthly capacity of millions of pieces, supported by more than 20 years of export experience to Europe, the United States, Japan, and Korea. Our 50,000 m² plant includes six clean workshops totalling 20,000 m². The in-house laboratory is CNAS-accredited and can issue reports on filtration efficiency, dust holding capacity, and resistance. We hold IATF 16949 (obtained in 2024) and ISO 9001, ISO 14001, and ISO 45001 system certifications, and products meet REACH and RoHS requirements with compliance documents available. Quality control runs through IQC, IPQC, and OQC, so each batch is checked from incoming material to final packing.
To move from concept to a quoted filter, send us the device or vehicle model, the cavity size or a drawing, the design airflow or water flow, the operating conditions, and your required quantity. Our engineering team will respond with a proposed construction, media grade, and test plan. Contact Jyntrel to start the conversation.
Yes. The filter is built for the higher face velocities typical of desktop purifiers. Media selection (PP, PP+PET, or PTFE) is matched to your measured airflow so that pressure drop and efficiency stay within your device's design targets.
We need the design airflow rate and the available filter cavity dimensions or a drawing. If the unit also humidifies, include the water flow. These inputs let us propose media grade, carbon loading, and pleat density for your target CADR.
The filter can be supplied from F7 to H13, with the grade chosen against your device's airflow and purification requirement. Higher grades are available within the same cylindrical format when the fan can support the corresponding pressure drop.
Yes. We produce rectangular, cylindrical, sector, and irregular polygonal shapes to match your air duct, including any length, width, thickness, and foam sealing edge. Send your CAD envelope and we will return a filter drawing for approval.
For standard sizes, samples are typically free and you cover international courier cost. Custom samples carry a tooling and material charge, which can be credited against the production order. Quotations follow review of your airflow, dimensions, and quantity.
Standard models usually start at 1,000–2,000 pieces, while custom models are quoted individually; flexible trial quantities are supported. Sample lead time is generally 7–15 working days, and production lead time is typically 25–35 days.
Under normal use of about 8 hours per day, the HEPA filter typically lasts 6–12 months, depending on ambient air quality, usage frequency, and contaminant concentration. We can integrate an RFID tag or work with your device's timer or pressure-sensor strategy to indicate replacement.
Our team supports media selection, structure design, sample development, and performance testing, backed by the CNAS-accredited laboratory. Provide the cavity dimensions and target CADR or filtration requirement, and we will deliver a proposed design with test data. <a href="/en/contact">Contact us</a> to begin.
