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Celrith washable dust box filters are removable filter elements for robot vacuums, handheld vacuums, bed mite removers, and similar cleaning devices. They capture PM2.5, fine dust, dust mites, pollen, and pet dander before these particles are exhausted back into the room. Designed for households and OEM buyers who need low airflow resistance and repeatable washing performance, these filters help maintain suction and reduce secondary contamination.
Indoor cleaning appliances handle a concentrated mix of contaminants. Fine dust, pollen, pet dander, and dust mite debris accumulate in dust boxes and filter media. Without effective interception, these particles can be released back into the air through exhaust airflow, causing secondary pollution. Odours and gases may also linger in the dust box, especially in humid conditions.
For allergy-sensitive users and pet owners, the ability to trap fine particles at the filter is critical. The contaminant load also affects equipment: clogged filters increase resistance, reduce suction, and shorten motor life.
When a filter becomes loaded with dust, airflow resistance rises. The motor must work harder to maintain suction, which can reduce battery runtime in cordless devices and increase wear on the fan and motor. In robot vacuums, reduced airflow can leave more dust on floors and in corners.
Washable filters address this by allowing users to remove and rinse the filter, restoring airflow and extending service life. However, not all washable filters maintain efficiency after repeated washing. The filter media and construction must resist degradation to keep performance stable.
Celrith filters use high-precision PTFE (polytetrafluoroethylene) microporous membrane or composite PP (polypropylene meltblown) media. These materials are moisture-resistant and help inhibit bacterial growth. The microporous structure intercepts fine particles while maintaining high porosity for low airflow resistance.
Low resistance means the motor does not have to work as hard, helping to preserve suction and battery life. The filters are designed for repeated washing: under correct cleaning methods, they can be washed more than 50 times while maintaining filtration efficiency above 90% of the initial value, as verified by our CNAS-accredited laboratory.
Celrith offers full customisation. Filter dimensions are made to fit the dust box of each device model. We provide environmentally friendly injection-moulded frames with edge sealing, and we support large-scale OEM production of washable PTFE-coated versions. Our engineering team can develop tooling for new models and adapt filter media grades to specific requirements.
| Item | Detail |
|---|---|
| Product name | Robot vacuum cleaner / handheld vacuum filter |
| Core filtration material | High-precision PTFE microporous membrane / composite PP meltblown, moisture-resistant and antibacterial media |
| Core purification function | Strong interception of PM2.5, fine dust, dust mites, pollen, and pet dander inside the vacuum; prevents secondary exhaust pollution |
| Physical fluid characteristics | High-porosity breathable design, extremely low airflow resistance; does not waste motor suction; helps improve battery runtime |
| Main application terminals | Smart robot vacuums, handheld cordless vacuums, bed mite removers, car mini vacuums, wet-dry vacuums |
| Frame and size customisation | 100% customised to dust box dimensions. Environmentally friendly injection-moulded frame, edge sealing treatment, and scalable OEM production of washable PTFE-coated versions |
| Company certification system | 50,000 m² modern production base and national-level CNAS testing centre. Strictly implements ISO 9001, ISO 14001, and IATF 16949 international quality management system standards |
These filters serve two main groups. First, household users of robot vacuums and handheld vacuums who want a replaceable, washable filter that maintains suction and reduces dust re-emission. Second, OEM and ODM buyers—appliance brands, vacuum manufacturers, and aftermarket suppliers—who need filters tailored to their device models with consistent quality and supply.
Our filters are compatible with popular robot vacuum brands such as iRobot, Ecovacs, Xiaomi, Roborock, and Shark. We also support custom designs for new models based on drawings, samples, or device specifications.
Celrith products comply with REACH and RoHS environmental regulations, and we can provide compliance documentation. Our quality and environmental management systems are certified to ISO 9001, ISO 14001, and ISO 45001. In 2024 we obtained IATF 16949 certification for automotive quality management.
Our in-house laboratory is accredited by CNAS (China National Accreditation Service for Conformity Assessment) and can issue test reports for filtration efficiency, dust holding capacity, and airflow resistance. Our 50,000 m² production base includes 6 cleanrooms totalling 20,000 m², with multiple automated production lines and monthly capacity in the millions of pieces. With over 20 years of filtration experience and exports to Europe, the US, Japan, and South Korea, we have developed more than 1,000 filtration solutions. Our address is Zhongshan, Guangdong, China.
To receive a quotation or discuss a custom filter project, please provide: your device or vehicle model, required dimensions or drawing, target airflow or water flow, operating conditions, and estimated quantity. Our team will respond with a tailored proposal. Contact us today.
It captures PM2.5, fine dust, dust mites, pollen, and pet dander from the airstream inside robot vacuums and handheld vacuums. This helps prevent secondary pollution from exhaust air. The filter media are moisture-resistant and help inhibit bacterial growth.
Under correct washing and maintenance, the filter can be washed more than 50 times while maintaining filtration efficiency above 90% of its initial value. Replacement frequency depends on usage and contamination level. We recommend inspecting regularly and replacing when suction noticeably drops or the filter shows damage.
Yes. We offer full OEM/ODM customisation based on your drawings, samples, or device model. Dimensions, frame structure, filter media grade, and packaging can all be tailored. Our engineering team can develop tooling for new models and provide samples within 7 days.
Standard specifications typically have an MOQ of 5,000–10,000 pieces. Custom products have MOQ negotiable based on complexity. Samples can be arranged; please contact us with your requirements for details.
Standard stock items ship in about 7–15 days. Custom orders, including tooling, usually take 30–45 days after order confirmation. We have a dedicated production planning team and can prioritise urgent orders.
The high-porosity design minimises airflow resistance, so the motor does not have to work as hard. This helps maintain suction performance and can improve battery runtime in cordless devices.
Yes. Our filters comply with REACH and RoHS regulations, and we can provide compliance documents. Our quality management systems are certified to ISO 9001, ISO 14001, and ISO 45001.
Please provide your device model, required dimensions or drawing, target airflow or water flow, operating conditions, and estimated quantity. Our team will respond with a tailored proposal. <a href="/en/contact">Contact us</a> to start the conversation.