Addressing the pain points of limited filter installation in industrial ventilation ducts and clean units that are prone to air leakage, Cleantop has specially developed the Single/Double Flange Medium-High Efficiency Filter. It utilizes corrosion-resistant anodized aluminum alloy as the frame, featuring an integrated flange design that achieves seamless connection with the installation groove through a sealing system, completely eliminating the risk of dirty air bypassing. The core media is carefully selected ultra-fine glass fiber, effectively intercepting sub-micron dust, providing qualified clean air for precision electronics, pharmaceuticals, and hospitals, and other high-demand environments.
Get Customized Industrial Solutions and QuotesEliminate the common drawbacks of standard plate filters that are difficult to install and prone to small gaps. Single or double-sided flange frames allow for secure bolting directly into the duct slot. Paired with high-quality sealing strips, achieving 100% air tightness, completely eliminating the risk of unfiltered air bypassing.
The internal filter uses dense ultra-fine glass fiber with performance meeting EN 1822 international standard E11 to E12 levels. It effectively captures ≥0.3μm sub-micron dust particles, aerosols, and bacteria while ensuring large air volumes flow through.
The outer frame is made of anodized aluminum alloy profiles, which are lightweight and significantly reduce the installation burden for high pipelines; it also has strong oxidation resistance, corrosion resistance, and compressive strength. Even in vent systems with high humidity or weak acidic or alkaline gases, it remains long-lasting.
| Product Name | Single Flange / Double Flange Plate Medium & HEPA Filter |
|---|---|
| Filtration Level (EN 1822) | E11 (Sub-High Efficiency) / E12 (High Efficiency) |
| Core Filter Media | High-Flow Ultra-Fine Glass Fiber Filter Paper |
| Frame Material | Anodized Aluminum Alloy Profile |
| Main Application Scenarios | Clean rooms in pharmaceutical factories/electronics factories, hospital operating room purification, HVAC terminal systems, FFU (Fan Filter Unit) |
| Common 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) |
| Customization Services (OEM/ODM) | Cleantop has a nationally recognized CNAS testing center and fully passed the ISO9001/IATF16949 system certification. Supports professional custom production for flange dimensions, non-standard airflow, and various special sizes. |
Whether upgrading consumables for a new air system or matching high-standard flange frame filters for precision filtration equipment, with over 20 years of air filtration R&D and source manufacturing experience, Cleantop will provide you with the most competitive prices and top-quality assurance.
Contact Engineering Team / Apply for Customized SamplesOur Single/Double Flange High-Efficiency Filters provide a full range from H13 to U17, achieving over 99.99% filtration efficiency for 0.3μm particles. For U15 and above, the efficiency for 0.1-0.2μm MPPS particles exceeds 99.9995%. Our products are widely used in semiconductor wafer factory FFU systems, photolithography environments, microelectronics packaging clean rooms, LCD/OLED production lines, and other ISO Class 1-5 ultra-clean environments. All products undergo scanning leak tests in our national-level CNAS-certified laboratory to ensure no leakage points for each unit that leaves the factory.
Single flanges are suitable for standard FFU top air delivery or ceiling embedded installations, offering a compact structure and easy replacement; double flanges are suitable for pipe connections that require bi-directional sealing or high-pressure difference scenarios, ensuring superior air tightness. As a manufacturer with over 20 years of experience, we possess comprehensive ODM/OEM capabilities, allowing us to customize based on customer duct sizes, flange specifications (aluminum alloy/galvanized/stainless steel), filter media (glass fiber/PTFE), partition types (aluminum partition/no partition), and sealing strip types, and support customer logos and customized packaging.
Cleantop has obtained ISO 9001, ISO 14001, and ISO 45001 management system certifications. In 2024, we added IATF16949 automotive-grade quality system and medical GMP certifications, and our products have received international certifications such as European BSC1, US EPA, NSF, etc. For semiconductor and microelectronics clients, we can provide MPPS scanning test reports for each unit according to EN 1822 and ISO 29463 standards, ensuring compliance with stringent requirements of FAB facilities.
Cleantop has a factory of 50,000 square meters, of which 20,000 square meters are clean rooms that meet ISO Class 7-8 standards, specifically for the assembly and packaging of high-efficiency filters, avoiding secondary pollution during production. We are equipped with a nationally recognized CNAS accredited testing center, and each high-efficiency filter undergoes four rigorous checks: 100% scanning for leaks (Scan Test), efficiency testing, resistance testing, and visual inspection, with key data traceable, ensuring consistency between batches.
We are very flexible for OEM/ODM clients: the standard specification MOQ is usually 50-100 units, while custom specifications generally start from 100-300 units depending on complexity. For samples, standard sizes can be provided free of charge (customer bears the shipping cost), and we charge for tooling and sample fees for custom samples (refundable for bulk orders). The sampling cycle typically takes 7-15 working days and includes a complete test report from the CNAS laboratory with the sample.
The MOQ for standard specification products is generally 50-100 units, while the MOQ for customized specifications depends on the complexity of the structure, usually starting from 100-200 units. We can negotiate flexibly for new clients and sample orders. Standard product stock delivery time is 7-15 days, while the delivery time for bulk custom orders is usually 25-35 days. Our company has multiple automated production lines and sufficient raw material inventory to support urgent orders and long-term stable supply requirements.
The lifespan of high-efficiency filters depends on the front-end pre-filtration level, operating airflow speed, and cleanliness of the environment. In typical semiconductor FAB application scenarios, the average lifespan is 3-5 years (with a replacement standard when the final resistance reaches twice the initial resistance). Our company can provide final resistance monitoring solutions, replacement cycle assessments, and full lifecycle technical support based on customer actual working conditions, and assist customers in on-site problem analysis to ensure long-term stable operation of the system.
High-efficiency filter elements are delicate and pressure-sensitive, so we use industry-leading exclusive packaging solutions: built-in PE moisture-proof bags + EPE pearl cotton corner protectors + high-strength five-layer corrugated cardboard boxes + wooden pallets for overall fixation, ensuring no compression, deformation, or dust contamination during sea transport. Packaging can be printed with customer-requested brand logos, specifications, labels, and barcodes, meeting retail and industrial customer shelf requirements in the European and American markets.
