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The Ranveth aluminum pre-filter is a multi-layer metal mesh panel that captures coarse dust, hair, fibers and oil smoke before they reach downstream coils or fine filters. Its layered aluminum or stainless steel media and rigid frame are built for high-humidity, high-temperature and corrosive intake air in commercial HVAC, industrial ventilation and process equipment. It suits facility engineers, OEM equipment makers and contractors who need a washable first-stage filter with predictable resistance and a long service cycle.
The performance of this pre-filter comes from how the metal layers are paired, not from any single mesh. Ranveth builds the core from multiple layers of corrugated and expanded aluminum mesh, stacked so that each layer presents a different opening pattern to the airflow. The outer layers intercept larger debris, while the inner layers divide the remaining dust load across more surface area. This pairing raises dust-holding capacity without a proportional rise in initial resistance.
Layer count is a specification, not a fixed construction. More layers increase the amount of media in the same frame depth, which generally extends service life in dirty intake air; fewer layers keep resistance low where airflow is the priority. Because the media is 100% metal, the panel can be washed and returned to service repeatedly, which changes the maintenance model from replacement to cleaning. The aluminum frame is available in aluminum profile, stainless steel or ABS plastic, so the same media stack can be matched to a wet, coastal or high-temperature housing.
The all-metal build also means the filter is fire-retardant and resistant to acid and alkali attack, which matters in exhaust and make-up air systems where paper or synthetic media would degrade. The 1-inch (21 mm) and 2-inch (46 mm) depths cover most standard filter tracks, and custom depths are available for OEM housings.
| Item | Detail |
|---|---|
| Product name | Aluminum Pre-Filter / Metal Mesh Filter |
| Core filtration media | Multi-layer corrugated expanded aluminum mesh or stainless steel mesh; layer count customizable |
| Frame material | Aluminum profile, stainless steel or ABS plastic |
| Physical properties | Low initial resistance, fire-retardant, acid and alkali resistant, washable and reusable |
| Typical applications | High-humidity and high-temperature industrial exhaust; central AC pre-filtration in commercial buildings; insect and leaf pre-filtration for plants; ventilation in acid and alkali workshops |
| Standard thickness | 1 inch (21 mm) / 2 inch (46 mm) |
| Common sizes (W × H × D) | 12×24×1 in (287 × 592 × 21 mm); 24×24×1 in (592 × 592 × 21 mm); 12×24×2 in (287 × 592 × 46 mm); 24×24×2 in (592 × 592 × 46 mm) |
| Customization (OEM/ODM) | 50,000 m² plant, ISO/IATF16949 certified; any length, width, thickness and mesh layer count made to order |
The layer build makes this filter a fit for intake air that would quickly clog or degrade a disposable panel. In commercial HVAC and ventilation systems, it protects cooling coils and downstream bag or HEPA filters from coarse dust and debris. In pharmaceutical and food processing plants, it serves as a washable first stage ahead of higher-efficiency filters. Automotive and machinery plants use it on paint booth and general ventilation intakes, while energy and metal smelting operations rely on the metal media in hot exhaust streams.
Energy storage cabinets, AI computing and data center air handling, and semiconductor and microelectronics cleanrooms use the panel as a pre-filter where washability and low resistance support continuous operation. Medical and cleanroom suites use it upstream of final filters to extend change intervals. As an oil smoke filter, the multi-layer metal mesh traps grease particles in commercial kitchen exhaust, and the panel can be cleaned and reused.
Ranveth builds to your housing, not to a catalogue list. To quote accurately, send the device or vehicle model the filter fits, or a dimensioned drawing showing width, height, depth and any frame profile. Tell us the airflow rate and the expected dust or oil smoke load, plus operating conditions such as temperature, humidity and exposure to acids, alkalis or salt. If you have a target resistance or efficiency range, include it; if not, our team can propose a layer count and frame material based on the intake environment. Finally, state the quantity and whether you need Ranveth branding, neutral packaging or your own logo.
Our in-house laboratory is accredited by CNAS, so the efficiency, dust-holding and resistance figures behind each media pairing can be supported by test reports rather than estimates. Production runs in a 50,000 m² plant that includes six cleanrooms totaling 20,000 m², which keeps metal mesh assembly away from contamination-sensitive lines. The facility holds IATF 16949 automotive quality certification, obtained in 2024, alongside ISO 9001, ISO 14001 and ISO 45001 systems. Products meet REACH and RoHS requirements, and compliance documents are available for export markets. With more than 20 years of filter development and manufacturing, we have supplied OEM and ODM customers in Europe, the US, Japan and Korea, and have built over 1,000 filter solutions. The company is based in Zhongshan, Guangdong, China.
Share your filter size or drawing, airflow, operating conditions and quantity, and the Ranveth team will recommend a media stack and frame material and confirm pricing. Visit our contact page to send your requirements.
It uses multiple layers of corrugated expanded aluminum mesh or stainless steel mesh, stacked in an aluminum profile, stainless steel or ABS plastic frame. The layer count is customizable to balance dust-holding capacity against initial resistance. The all-metal media is washable and fire-retardant.
The aluminum pre-filter is typically rated G2–G4 (EN 779) or MERV 1–8 (ASHRAE 52.2), and is designed to capture particles larger than 5 μm such as dust, hair and fibers. The exact grade depends on the media and layer configuration. We can supply test data from our CNAS-accredited laboratory to support the selected grade.
Yes. Adding media layers generally increases dust-holding capacity and extends service life in dirty intake air, while fewer layers keep initial resistance low where airflow is critical. Our engineers can propose a layer count based on your airflow and dust load. The metal media can also be washed and reused, which lowers long-term operating cost.
Yes, we support OEM/ODM builds to any length, width, thickness and mesh layer count, and we can match your frame profile and packaging requirements. Send a drawing or sample and your device or vehicle model, and we will confirm feasibility and tooling needs. Our 50,000 m² plant and IATF 16949 system support both prototype and volume production.
For standard sizes, MOQ is typically 500–1,000 pieces; custom specifications are quoted individually and MOQ is flexible depending on the build. Stock items usually ship within 7–10 days, while custom orders take about 25–35 days depending on quantity and complexity. We will confirm both when you send your requirements.
In typical commercial HVAC service, the filter is cleaned or replaced every 3–6 months depending on air quality, and the washable metal media can be reused multiple times over an overall service cycle of 1–2 years. In heavy oil smoke or high-dust intake, inspect more frequently. Cleaning restores resistance and extends the life of downstream filters.
Yes. Standard-size samples can be provided free of charge with freight collected, while custom samples may carry a fee that is refundable against a bulk order. Sample lead time is generally 3–7 working days. Our CNAS-accredited laboratory can also provide performance test reports to support your evaluation.
Please send the device or vehicle model, a dimensioned drawing or the size, the airflow rate and dust or oil smoke load, operating conditions such as temperature, humidity and chemical exposure, and the required quantity. If you have a target resistance or efficiency, include that as well. With these details we can recommend a media stack and frame material and return a firm quote — just reach us via <a href="/en/contact">our contact page</a>.