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The Thesvin washable activated carbon sponge filter is a flexible, polyurethane-based filter that removes large particles and adsorbs harmful gases such as formaldehyde, benzene, and ammonia. It is designed for air purifier pre-filters, fresh air systems, automotive cabin filters, central air return vents, and industrial vacuums. Brand: Thesvin.
Thesvin’s activated carbon sponge filter is built around fitment. The polyurethane sponge base is highly flexible and can be cut or die-cut to match the exact contours of your device or duct. Because the material conforms to irregular spaces, it seats tightly against frames and housings without leaving gaps that would let unfiltered air bypass the media.
For high-volume production, we offer stamping and forming services to deliver parts with consistent outer dimensions and hole patterns. Whether your unit uses a flat panel, a cylindrical cartridge, or a complex shape, we can produce a filter that drops into place. The low airflow resistance of the open-cell sponge means the filter does not impose a significant load on your fan or blower.
We support full OEM/ODM customisation: thickness from 3 mm to 50 mm, pore density (PPI) to suit your filtration and pressure-drop targets, and any outline size. If you have a drawing or a sample of the existing part, our team can reverse-engineer the geometry and recommend the right sponge specification for a precise fit.
This filter combines two functions in one layer. As a pre-filter, it captures coarse particles such as hair, dust, and lint. At the same time, the activated carbon content—fine powder or granules fixed into the sponge through a special process—adsorbs formaldehyde (HCHO), benzene, ammonia, and other odorous gases. This dual action makes it a practical first stage in air purifiers, fresh air ventilation systems, and automotive HVAC units.
The washable design allows the filter to be rinsed and reused, which reduces consumable costs for end users and supports a more sustainable product lifecycle. The sponge is breathable and offers very low airflow resistance, helping to maintain energy efficiency in appliances and HVAC systems. Its high flexibility also means it can be adapted to almost any irregular space, including tight corners and curved surfaces.
| Item | Detail |
|---|---|
| Product name | Washable Activated Carbon Sponge Filter |
| Base material | Polyurethane sponge |
| Adsorbent | Premium powdered or fine granular activated carbon, fixed by a special process |
| Filtration performance | Primary filtration of large particles (hair, dust) plus adsorption of formaldehyde (HCHO), benzene, ammonia, and other harmful gases |
| Physical advantages | Washable and reusable, very low airflow resistance, high flexibility for easy cutting, good air permeability |
| Typical applications | Air purifier pre-filter, fresh air system pre-filter, automotive cabin filter, central air return vent, industrial vacuum |
| Customisation | OEM/ODM supported: thickness 3 mm–50 mm, pore density (PPI) and outer dimensions, stamping and forming |
| Quality certification | Produced in a 20,000 m² clean workshop; company certified to ISO 9001, ISO 14001, and IATF 16949 |
Thesvin operates a 50,000 m² manufacturing facility, including 6 clean workshops totalling 20,000 m². Our quality system is certified to ISO 9001, ISO 14001, and ISO 45001, and we obtained IATF 16949 certification in 2024. From incoming material inspection (IQC) to in-process checks (IPQC) and outgoing quality control (OQC), every batch is monitored for dimensional accuracy and material consistency.
Our in-house laboratory is CNAS-accredited and can issue test reports for filtration efficiency, dust holding capacity, and airflow resistance. Products comply with REACH and RoHS requirements, and we can supply the relevant compliance documents. With over 20 years of experience in filtration and more than 1,000 filter solutions developed, we export to Europe, the US, Japan, and Korea. Multiple automated production lines support a monthly capacity of several million pieces.
For standard specifications, MOQ is typically 5,000–10,000 pieces; custom sizes generally start at 10,000 pieces. Sample lead time is about 5–7 working days, and bulk delivery is usually 25–35 days after order and sample confirmation. We support sea, air, and express shipping.
To get an accurate quote and fitment recommendation, please provide the following:
Our engineering team will review your requirements and respond with a proposal. Contact us to start the conversation.
Thesvin’s activated carbon sponge filter is custom-made to your dimensions. We can die-cut or stamp the polyurethane sponge to match your existing filter’s outline, thickness, and mounting features. Send us a drawing or a sample of the old part, and we will confirm fitment.
Yes. An old filter is often the best reference because it shows the exact shape and any compression set. We can measure it, create a drawing for your approval, and produce samples that replicate the fit.
This is a pre-filter and gas-adsorption media, not a HEPA filter. It captures coarse particles such as hair and dust and adsorbs formaldehyde, benzene, and ammonia. Efficiency depends on the activated carbon loading and pore density you select; we can provide test data from our CNAS-accredited lab for the specific configuration.
Absolutely. We offer OEM/ODM customisation for thickness (3 mm to 50 mm), pore density (PPI), and outer dimensions. We also provide stamping and forming services to create complex shapes that fit your device precisely.
Send us your fitment details (drawing or old part), required airflow, operating conditions, and estimated quantity. For B2B customers with a clear project, stock samples are free (you cover freight); custom samples may incur a fee that is credited against a bulk order. We will quote based on your specifications.
For standard specifications, MOQ is typically 5,000–10,000 pieces. Custom sizes generally start at 10,000 pieces, depending on material and tooling. We can discuss your specific needs.
Sample lead time is about 5–7 working days. Bulk production usually takes 25–35 days after order confirmation and sample approval. We will confirm the schedule when you place your order.
The filter is washable and reusable, so replacement depends on the application and contaminant loading. For air purifiers, we recommend monitoring airflow and washing when you notice reduced performance. In automotive or industrial use, replace when cleaning no longer restores airflow or odour removal. We can help you set a maintenance schedule based on your device.
