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Thesvin single/double flange medium efficiency filters are panel filters with an anodized aluminum frame and high-performance glass fiber media, rated E11 or E12 according to EN 1822. They are designed for cleanrooms, hospitals, HVAC terminals, and FFU systems, capturing sub-micron particles at efficiencies up to E12. This filter is for facility engineers, OEMs, and contractors who need a precise fit and verifiable efficiency.
Fitment is the first consideration. The filter uses a single or double flange on the frame to locate and seal against the host unit. The single-flange version provides one sealing face for standard duct or housing connections, while the double-flange version offers flanges on both inlet and outlet sides, improving stability and sealing in high-pressure or leak-sensitive installations. The anodized aluminum profile frame is lightweight and corrosion-resistant, helping the filter maintain its shape under airflow. Standard depths are 88 mm, with face sizes of 287 × 592 mm and 592 × 592 mm, matching common grid systems. For non-standard openings, Thesvin offers custom flange dimensions and frame sizes to match your existing track or duct interface.
The media is a high-throughput ultra-fine glass fiber paper, selected for low resistance and high particle capture. It targets sub-micron particles such as dust, smoke, and microorganisms, making it suitable for pharmaceutical cleanrooms, electronics manufacturing, hospital operating rooms, HVAC terminal filtration, and FFU units. The filter is often used as a pre-filter ahead of HEPA stages to extend the life of final filters. With E11 and E12 ratings, it provides a defined efficiency level for critical environments.
| Item | Detail |
|---|---|
| Product name | Single/Double Flange Medium & HEPA Filter |
| Filter class (EN 1822) | E11 (Medium Efficiency) / E12 (High Efficiency) |
| Media | High-throughput ultra-fine glass fiber paper |
| Frame material | Anodized aluminum alloy profile |
| Core applications | Pharmaceutical/electronics cleanrooms, hospital operating rooms, HVAC terminal filtration, FFU |
| Standard sizes and rated airflow (W × H × D) | • 287 × 592 × 88 mm (E11: 1000 m³/h; E12: 500 m³/h) • 592 × 592 × 88 mm (E11: 2000 m³/h; E12: 1000 m³/h) |
| Customization (OEM/ODM) | CNAS testing center; ISO9001/IATF16949 certified. Custom flange dimensions, non-standard airflow, and special sizes available. |
For airflows up to 2000 m³/h, the 592 × 592 × 88 mm E11 filter is rated at 2000 m³/h, while the E12 version is rated at 1000 m³/h. These figures help you match the filter to your system's airflow and pressure drop requirements.
Thesvin operates a 50,000 m² manufacturing facility in Zhongshan, Guangdong, China, including 20,000 m² of cleanrooms. The company is IATF 16949 certified (2024) and holds ISO 9001, ISO 14001, and ISO 45001 certifications. Quality control covers IQC, IPQC, and OQC to ensure dimensional consistency and performance. An in-house CNAS-accredited laboratory can issue test reports for filtration efficiency, dust holding capacity, and resistance. Products comply with REACH and RoHS, with documentation available upon request. With over 20 years of experience and more than 1,000 filtration solutions developed, Thesvin supports OEM/ODM projects and exports to Europe, the US, Japan, and South Korea.
To get an accurate quote, please provide: device or vehicle model (if applicable), filter dimensions or a drawing, required airflow or water flow, operating conditions (temperature, humidity, contaminants), and quantity. If you don't have a drawing, you can send an old part or clear photos with measurements. Our engineering team will review and respond promptly. Contact us to start your inquiry.
The filter is available in standard sizes 287 × 592 × 88 mm and 592 × 592 × 88 mm with single or double flanges. For non-standard interfaces, we customise flange dimensions and frame sizes. Provide your opening dimensions or a drawing and we will confirm fitment.
Yes, you can send an old part or clear photos with measurements. Our engineers will use it to match the flange, frame, and media. This helps ensure the replacement fits correctly.
The filter is rated E11 or E12 according to EN 1822, using glass fiber media. E11 is suitable for medium efficiency applications, while E12 provides higher efficiency for critical environments. We can advise based on your requirements.
MOQ depends on the specification. For standard sizes, MOQ is typically 50–100 pieces; custom sizes may require 100–200 pieces. We can discuss flexible terms for sample orders.
Standard products ship in 7–15 days. Custom orders typically take 25–35 days, depending on complexity. We will confirm the lead time when you place an order.
Replacement interval depends on operating conditions and pressure drop. We recommend replacing when resistance reaches twice the initial value or 450 Pa. In clean environments, filters often last 6–12 months.
Yes, we can provide samples for evaluation. Please specify the size and efficiency you need. Sample costs and shipping will be quoted upon request.
Send us your device model, dimensions or drawing, required airflow, operating conditions, and quantity. Our team will respond with a quotation and technical recommendations. <a href="/en/contact">Contact us</a> to proceed.