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Help CenterPolyester Flange-Clamp Air Filter With 0.5 Inch Water Gauge Initial Pressure Drop, 30% Higher Dust Load
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Anping County Boli Hardware Wiremesh Products Factory, established in 1998, brings over two decades of expertise in manufacturing high-performance air filtration solutions. Our Polyester Flange-Clamp Air Filter is engineered to deliver superior dust loading capacity while maintaining an exceptionally low initial pressure drop of only 0.5 inch water gauge. This filter is designed for clients who demand reliable, cost-effective air cleaning in commercial and industrial HVAC systems. With an annual export value exceeding US$5 million, we serve markets across North America, South America, Europe, and Asia, ensuring consistent quality and timely delivery from ports such as Tianjin, Qingdao, and Shanghai.
The core advantage of this filter lies in its 30% higher dust load compared to conventional polyester filters. This is achieved through advanced fiber layering technology that maximizes depth loading while minimizing airflow resistance. The flange-clamp construction allows for quick, secure installation without the need for special tools, reducing downtime during filter replacement. Whether you need to upgrade existing air handling units or design new systems, our filter provides a perfect balance between filtration efficiency, energy savings, and service life.
Key Features & Benefits
- Low Initial Pressure Drop: Only 0.5 inch water gauge (approx. 125 Pa) at rated airflow, reducing fan energy consumption and operational costs.
- High Dust Holding Capacity: 30% more dust load than standard media filters, extending replacement intervals and lowering maintenance frequency.
- Polyester Media: Synthetic fibers provide good moisture resistance, low shedding, and compatibility with most HVAC environments.
- Flange-Clamp Design: Integrated mounting flange enables easy insertion into standard filter frames; no separate clamping hardware needed.
- Uniform Airflow: Pleated construction ensures consistent pressure distribution across the filter face, preventing premature clogging.
- Customizable Sizes: Available in standard dimensions (e.g., 24x24x4 inches) or custom sizes upon request.
- Environmentally Friendly: Media can be used in disposable applications, simplifying waste management.
Technical Specifications
| Parameter | Value |
| Media Material | 100% Polyester non-woven |
| Initial Pressure Drop | 0.5 inch WG (125 Pa) @ 2.5 m/s face velocity |
| Dust Holding Capacity | ≥ 400 g/m² (typical, 30% higher than standard) |
| Filter Class | G4 (EN 779) / F5 (optional) |
| Operating Temperature | -20°C to +80°C (continuous) |
| Relative Humidity | ≤ 95% RH |
| Frame Construction | Integral flange-clamp, galvanized steel or aluminum |
| Standard Sizes (inches) | 12x12x4, 16x20x4, 20x20x4, 24x24x4, custom sizes available |
Our manufacturing facility in Hengshui, Hebei, China, operates with ISO 9001 quality management systems (available upon request). Each filter undergoes rigorous testing to ensure consistent pressure drop and dust loading performance. The flange-clamp design is particularly suited for retrofit applications where existing filter frames are in good condition, saving you the cost of full frame replacement.
Trusted by Global Markets
Since 1998, Anping County Boli Hardware Wiremesh Products Factory has exported over US$5 million annually to clients in North America, South America, Europe, Oceania, Africa, the Middle East, and Asia. We understand the diverse requirements of international HVAC contractors, facility managers, and OEMs. Our filters are shipped from major ports including Tianjin, Qingdao, Shanghai, and Foshan, with lead times as short as 15–25 days. We offer OEM/ODM services, custom packaging, and private labeling to meet your branding needs.
When you choose our Polyester Flange-Clamp Air Filter, you benefit from a product that reduces energy costs, extends filter life, and simplifies maintenance. The 30% higher dust load means fewer changeouts, less labor, and lower waste disposal costs. Pair this with our competitive pricing and reliable supply chain, and you have a winning solution for your air filtration requirements.
Contact us today for a quote or to request samples. We are ready to support your projects with technical data sheets, performance curves, and customized solutions. Let Boli Wiremesh be your trusted partner in clean air.
Frequently Asked Questions (FAQ)
Q1: What is the typical pressure drop at the end of life?
A: The recommended final pressure drop is typically 1.0–1.5 inch water gauge (250–375 Pa). The low initial drop of 0.5 inch WG allows for a longer service interval before reaching this limit.
Q2: Can this filter be used in high-humidity environments?
A: Yes, the polyester media is moisture-resistant up to 95% RH. However, for continuous condensation or wet conditions, we recommend a hydrophobic coating or a different media type. Please consult our technical team.
Q3: How do I install the flange-clamp filter?
A: Simply slide the filter into the existing frame. The integrated flange creates a tight seal without additional clamps. Ensure the airflow direction arrow on the filter matches the fan direction.
Q4: What is the dust holding capacity compared to standard filters?
A: This filter offers 30% higher dust load, meaning it can hold more dust before reaching the same pressure drop. Typical values are 30–40% more than standard G4 polyester filters of the same size.
Q5: Do you offer custom sizes?
A: Yes, we can produce any custom size with a minimum order quantity. Please provide your specific dimensions and desired thickness.
Q6: What is the operating temperature range?
A: Standard polyester media can operate continuously at up to 80°C (176°F). For higher temperatures, we can supply media with different fiber blends.
Q7: Are these filters washable or cleanable?
A: No, these are disposable filters designed for one-time use. Cleaning may damage the media and reduce efficiency.
Q8: What certifications do you have?
A: Our factory operates under quality management systems. Specific certifications such as ISO 9001 or UL can be provided upon request. We also conduct performance tests per EN 779/ASHRAE 52.2 standards.
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