Ranveth Panel High-Efficiency Filter for Cleanrooms and FFU Systems

Ranveth panel high-efficiency filters are pleated panel filters built for terminal filtration in cleanrooms, FFU fan filter units, laminar flow hoods and clean transfer windows. They capture fine airborne particles at H13 and H14 efficiency grades, with filtration efficiency of 99.99% or higher for particles at 0.3 μm, and selected models reach ULPA U15/U16 level. They are intended for buyers in semiconductor and microelectronics manufacturing, pharmaceutical and food processing, medical and cleanroom facilities, automotive and machinery plants, energy storage, data centres and commercial ventilation systems who need a defined media-and-frame build rather than a generic panel.

Media Pairing and Layer Build

The performance of a panel high-efficiency filter is set long before assembly, at the point where media and layer structure are paired. In the Ranveth range, the filter media options include glass fibre and PTFE, and the pleat pack is held by a separator chosen for the duty: hot melt adhesive, aluminium foil or paper separators. The frame can be aluminium alloy, galvanised steel, stainless steel, MDF or plastic. Each combination moves three things at once — efficiency, airflow resistance and service life — and the build is chosen so that those three stay in balance for the application.

A denser or finer medium raises particle capture but also raises resistance, which the fan in an FFU or air handling unit must then overcome. Separator choice affects how evenly air distributes across the pleat pack and how the pack holds its shape through pressure cycling. Frame material matters for weight, rigidity and compatibility with the mounting system in the ceiling grid or housing. Because the media and layer structure are specified together rather than independently, a buyer can target a filtration grade and an acceptable pressure drop at the same time, instead of accepting whatever falls out of a stock configuration.

Every unit is checked in the company's CNAS-accredited laboratory, where efficiency, dust holding capacity and resistance can be measured and reported. Efficiency testing, PAO/DOP scan leak testing and resistance testing are carried out on finished filters, so the pairing of media and structure is verified at the product level and not only on paper. That is the practical basis on which a specification is agreed: the build is selected for the duty, then confirmed by measurement.

Specification Sheet

Where It Is Used

These filters are used where airborne particle control is part of the process rather than a comfort measure. In semiconductor and microelectronics work they serve wafer fabrication, lithography areas, chip packaging and microelectronics assembly, including ISO Class 1–7 cleanrooms and the terminal filtration stage of FFU units, clean transfer windows and laminar flow hoods. In medical and cleanroom settings they support controlled environments where the air supply must meet a stated grade. In pharmaceutical and food processing they are applied where process air is part of hygiene control. Automotive and machinery plants use them in paint and precision assembly areas, energy storage manufacturers use them in cell production environments, and AI compute and data centre operators apply them where equipment cooling air is filtered to protect hardware. Commercial air handling and ventilation systems use them as high-grade final filters, and energy and metal smelting operations use them in controlled sections of their facilities.

What to Send Us for a Custom Build

Because the media-and-layer pairing is set per application, the more precisely the duty is described, the more directly the build can be matched to it. To prepare a proposal, send:

• The device or installation the filter serves, for example an FFU model, ceiling grid, laminar flow hood or transfer window, together with the equipment or vehicle model where relevant.
• The required size, or a drawing showing length, width, height and thickness, plus any frame or grid interface that must be respected.
• The airflow you need to pass, or the design face velocity, and the pressure drop you can accept at that airflow.
• Operating conditions: ambient temperature, humidity, the cleanliness of the upstream air, the pre-filtration stage and daily running hours.
• The efficiency grade you are targeting and any documentation your quality system requires.
• Quantity for the first order and expected annual volume, plus any logo, labelling or packaging requirements.

If some of these are not yet fixed, describe the application and the engineers will propose a media and structure combination for review. Contact the team with your details and the enquiry will be routed to the appropriate engineer.

Why Source from Ranveth

Media choices at Ranveth are test-backed. The company operates its own laboratory accredited by CNAS (China National Accreditation Service for Conformity Assessment), which can issue test reports covering filtration efficiency, dust holding capacity and resistance. That matters when a media and layer structure is being selected, because the pairing can be measured rather than assumed.

Production takes place in a 50,000 m² plant in Zhongshan, Guangdong, China, which includes six cleanrooms totalling 20,000 m². High-efficiency filters are assembled in cleanroom conditions to avoid cross-contamination. The quality system is certified to ISO 9001, ISO 14001 and ISO 45001, and IATF 16949 certification for the automotive quality management system was obtained in 2024. Products meet the REACH and RoHS environmental requirements, and compliance documents can be supplied.

The company has more than 20 years of experience in filter development and manufacturing and has exported to Europe, the United States, Japan and Korea for over 20 years. OEM and ODM work covers size, structure, media grade, frame material, logo and packaging, with more than 1,000 filter solutions developed to date. Multiple automated production lines support volume supply, and quality control runs through IQC, IPQC and OQC stages from incoming material to final release.

Request Samples and a Quote

Samples and quotations are handled together so that the sample reflects the build being quoted. For standard specifications the minimum order quantity is generally 50–100 pieces; for custom specifications it depends on structural complexity and is usually 100–200 pieces, with flexibility for new customers and sample orders. Standard items ship in 7–15 days, and custom bulk orders usually take 25–35 days. To start, send the device or vehicle model, the size or drawing, the airflow or water flow, the operating conditions and the quantity you expect, and the team will respond with a proposal. Send your requirements through the contact page.