To address the pain points of limited installation space and air leakage in industrial ventilation ducts and cleanroom units, Cleantop (洁鼎) has specially developed the Single/Double Flange Medium Efficiency Filter. It uses corrosion-resistant anodized aluminum alloy profiles as the frame, featuring integrated flange design that, coupled with a sealing system, achieves seamless integration with the installation槽, completely preventing dirty air bypass. The core filter media is made of ultra-fine glass fiber, perfectly capturing submicron dust, providing compliant clean air for high-demand environments such as precision electronics, pharmaceuticals, and hospitals.
Get Customized Industrial Solutions and QuotesEliminate the difficulties of installing regular panel filters, which are prone to tiny gaps. The single-sided or double-sided flange frame allows the filter to be securely fixed directly in the duct using bolts. Combined with high-quality sealing strips, it achieves 100% air tightness, completely eliminating the risk of unfiltered air bypass.
The internal filter media is made of dense ultra-fine glass fiber (Glass Fiber), achieving performance levels of E11 to E12 in accordance with EN 1822 international standards. It effectively captures ≥0.3μm submicron dust particles, aerosols, and bacteria while ensuring high airflow.
The outer frame uses anodized aluminum alloy profiles, which are lightweight and significantly reduce installation burdens on high-altitude ducts. It also has strong oxidation resistance, corrosion resistance, and compressive strength. Even in humid environments or exhaust systems containing mild acidic or basic gases, it remains durable.
| Product Name | Single Flange / Double Flange Panel Medium & HEPA Filter (单法兰 / 双法兰板式中高效过滤器) |
|---|---|
| Filtration Level (EN 1822) | E11 (Sub-Efficient) / E12 (Efficient) |
| Core Filtration Material (Media) | High Throughput Ultra-Fine Glass Fiber Filter Paper |
| Frame Material | Anodized Aluminum Alloy Profile |
| Core Application Scenarios | Pharmaceutical factories/Electronic industries cleanrooms, hospital operating room purification, HVAC systems endpoints, FFU (Fan Filter Units) |
| Regular Dimensions and Rated Airflow (Width × Height × Depth) |
• 287 × 592 × 88 mm (E11 rated airflow 1000 m³/h; E12 rated airflow 500 m³/h) • 592 × 592 × 88 mm (E11 rated airflow 2000 m³/h; E12 rated airflow 1000 m³/h) |
| Custom Services (OEM/ODM) | Cleantop has a national-level CNAS testing center, fully certified by ISO9001/IATF16949 systems. Supports customization of flange sizes, non-standard airflows, and various special dimensions. |
Whether upgrading the overall consumables of your fresh air system or matching high-standard flange-filtering solutions for precision filtration equipment, with over 20 years of air filtration R&D and sourcing manufacturing experience, Cleantop will provide you with the most competitive pricing and top-notch quality assurance.
Contact the Engineering Team / Request Custom SamplesOur single/double flange medium efficiency filters offer a range of efficiency grades from F5 to F9 (corresponding to ePM10 to ePM1) according to EN779 or ISO 16890 standards, with filtration efficiency covering 40%-95%@0.5μm. They are widely used in commercial central air conditioning systems, cleanroom pre-filtering sections, hospital ventilation systems, and HVAC systems in shopping malls and office buildings, serving as a primary protection segment for HEPA filters and effectively prolonging the lifespan of downstream high-efficiency filters.
Single flange structures are suitable for standard duct connections, offering ease of installation and lower costs, making them suitable for conventional HVAC systems; double flange structures have flanges on both intake and outlet sides of the filter, providing better sealing and stronger pressure-bearing capabilities, ideal for cleanrooms, pharmaceutical workshops, and high differential pressure conditions where leakage rates are a concern. Our engineering team can provide professional selection advice based on your airflow, air pressure, and installation methods.
Cleantop has been certified with ISO 9001, ISO 14001, and ISO 45001 management systems, and in 2024, it obtained IATF 16949 automotive industry certification and GMP certification for medical supplies. Our filter products meet European EN779, ISO 16890, and EUROVENT energy efficiency standards, along with certifications from BSC1 in Europe, EPA and NSF in the USA, fully satisfying compliance requirements for the European, North American, Japanese, and South Korean markets.
As a manufacturer with over 20 years of industry experience, we offer comprehensive OEM/ODM services. Customizable options include dimensions (non-standard sizes), filtration efficiency levels, filter media types (glass fiber/synthetic fiber), frame materials (galvanized sheet/aluminum alloy/stainless steel/paper frame), flange forms, brand logos, colored packaging, and exclusive manuals. We have over 1000 established solutions and can quickly respond to our clients' personalized needs.
Cleantop has a 50,000㎡ modern factory, with 20,000㎡ dedicated to six cleanroom workshops, ensuring no secondary contamination in the production environment. We have a national-level CNAS accredited testing center; each batch of products undergoes comprehensive testing for filtration efficiency, resistance, dust-holding capacity, and structural strength, with traceable quality inspection reports provided. In conjunction with the IATF 16949 automotive-grade quality control process, we ensure that performance variation between batches is less than ±3%.
The typical MOQ for standard specification products is generally 50-100 pieces, while the MOQ for custom specifications depends on the complexity of the structure, usually starting from 100-200 pieces. We can negotiate flexibly with new clients and sample orders. Standard product lead time is 7-15 days, while custom bulk orders typically range from 25-35 days. The company has multiple automated production lines and sufficient raw material inventory to support urgent orders and long-term stable supply needs.
Our products have been exported to multiple countries such as Europe, the USA, Japan, and South Korea, possessing rich export experience. Standard packaging uses moisture-proof PE film plus a five-layer corrugated carton, with built-in cushioning materials to prevent filter deformation; export packaging options include vacuum sealing, wooden pallets, fumigated wooden boxes, and more. We support various trading terms such as FOB, CIF, and DDP, and can work with clients' designated freight forwarders to provide complete export documents (CO, FORM A, FORM E, etc.).
The lifespan of medium efficiency filters depends on the operating environment, initial/final resistance settings, and running duration, generally ranging from 6 to 12 months. We recommend replacement when the filter resistance reaches twice the initial resistance or 450Pa. Cleantop can provide clients with differential pressure monitoring solutions and full lifecycle management recommendations, optimizing filter media formulations based on actual operating data to help clients achieve optimal total cost of ownership (TCO).
