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Thesvin formaldehyde catalytic filter mesh is a drop-in filtration component for household air conditioners and air purifiers, designed to decompose formaldehyde and TVOC at room temperature. It uses a high-activity manganese dioxide (δ-MnO₂) catalyst on a honeycomb activated carbon, porous ceramic, or fibre composite carrier. It is intended for appliance makers and filter integrators who need a dimensionally matched mesh that seals and locates in the host unit without adding energy consumption.
Fitment starts with the host device, not the filter media. On an air purifier, the mesh sits in the same filter slot as the original formaldehyde cartridge, and its outer dimensions, frame thickness and edge profile determine whether the unit closes and seals correctly. On a household air conditioner, the mesh is typically positioned in the return-air path or behind the pre-filter, so the frame must match the existing guide rails and not interfere with the fan or heat exchanger. Thesvin works from your existing part or drawing to set length, width, thickness and carrier format, so the mesh locates positively and seals against the housing without gaps that would let unfiltered air bypass the catalyst.
Because the catalyst works by contact, fitment directly affects performance: a loose or undersized mesh allows air to slip around the edge, reducing the effective treated airflow. Thesvin therefore treats the frame and carrier as part of the filtration design, matching the honeycomb activated carbon, porous ceramic or fibre composite carrier to the pressure budget and airflow of your device. The result is a component that installs like the original and keeps the air path sealed.
The catalytic mesh targets formaldehyde and other volatile organic compounds (TVOC) in indoor air. The high-activity manganese dioxide catalyst decomposes these gases at room temperature, so the filter does not rely on heat or UV energy to drive the reaction. This makes it suitable for continuous operation in air purifiers and air-conditioning units where power budget and noise are constrained. The catalyst is carried on a honeycomb activated carbon, porous ceramic or fibre composite substrate, giving a large contact area for the passing air stream.
This product is used in household air conditioners and air purifiers as a formaldehyde and TVOC catalytic filter. It is not a particulate HEPA stage; it is specified for gas-phase formaldehyde and VOC reduction, and it can be combined with a pre-filter in the same appliance to protect the catalyst surface from coarse dust.
| Item | Detail |
|---|---|
| Core catalytic component | High-activity manganese dioxide (δ-MnO₂) / composite manganese oxide |
| Formaldehyde clean air delivery rate (CADR) | ≥ 300 m³/h, customisable to the host device |
| Cumulative clean mass (CCM) | F4 grade (≥ 1500 mg), long-life design |
| Recommended operating environment | Temperature 5℃–50℃; humidity 30%–90% RH |
| Recommended service life | 12–36 months, depending on actual pollutant concentration |
| Compatible carrier formats | Honeycomb activated carbon mesh, porous ceramic core, fibre composite filter |
Dimensions, frame format and carrier type are matched to your device or duct; the CADR figure above is the reference performance and is customised per appliance. The service life range depends on the formaldehyde concentration in the application, so the 12–36 month window reflects light to heavy contamination conditions.
Thesvin holds IATF 16949 (obtained in 2024) and applies IQC, IPQC and OQC controls across the production flow, so dimensional consistency is checked from incoming carrier material to the finished mesh. The in-house laboratory is CNAS-accredited and can issue test reports for filtration efficiency, dust holding capacity and resistance. The production base covers 50,000 m², including six clean workshops totalling 20,000 m², and the company operates under ISO 9001, ISO 14001 and ISO 45001. Products meet REACH and RoHS requirements, and compliance documents can be provided.
With more than 20 years of filtration development and manufacturing experience and over 20 years of continuous export to Europe, the United States, Japan and Korea, Thesvin has developed more than 1,000 filtration solutions and supports OEM/ODM customisation of size, structure, media grade, frame material, logo and packaging. Multiple automated lines support monthly output in the millions of pieces. The company is based in Zhongshan, Guangdong, China.
To get a fitment-matched quote, send the device or vehicle model, the size or a drawing (an old part is also acceptable), the airflow or water flow, the operating conditions, and the quantity you need. Thesvin will confirm the carrier format, frame dimensions and catalyst specification against your housing. Start the inquiry at /en/contact.
Fitment is confirmed from your device or vehicle model, the filter slot dimensions, or a drawing or old part. Thesvin matches the frame thickness, edge profile and carrier format to the housing so the mesh seals and locates without bypass. Send the fitment data through the contact page for a dimensional check.
Yes. An old part is acceptable as the fitment reference, and Thesvin will measure it and confirm the carrier format and frame dimensions. If you also provide the airflow and operating conditions, the catalyst loading can be matched at the same time.
The reference formaldehyde clean air delivery rate (CADR) is ≥ 300 m³/h, customisable to the host device. Cumulative clean mass is F4 grade (≥ 1500 mg) in a long-life design. Final performance depends on the airflow and housing seal of your appliance.
Yes. Thesvin supports OEM/ODM customisation of size, structure, media grade, frame material, logo and packaging. The catalyst can be carried on honeycomb activated carbon mesh, porous ceramic core or fibre composite filter, depending on your airflow and pressure budget.
Send the device or vehicle model, the size or drawing, the airflow or water flow, the operating conditions and the quantity. Thesvin will confirm the specification and provide a sample and quote through <a href="/en/contact">/en/contact</a>.
Minimum order quantity and lead time are set per product and per customisation, so they are confirmed with your quote rather than stated in advance. Provide the quantity and specification and Thesvin will respond with both.
The recommended service life is 12–36 months, depending on the actual pollutant concentration in the application. Heavier formaldehyde loading shortens the interval, so the replacement schedule should follow the measured or expected concentration.
The recommended operating environment is 5℃–50℃ and 30%–90% RH. The catalyst works at room temperature without added energy consumption. Confirm your device conditions when inquiring so the carrier and catalyst are matched correctly.