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As a manufacturer with over two decades of expertise in wire mesh and filtration products, Anping County Boli Hardware Wiremesh Products Factory proudly introduces our Polyester Flange-clamp Air Filter with 3 Micron, 350°F Max Operating Temperature, Washable Design. This high-performance filter is engineered to deliver reliable particulate removal in demanding industrial environments, while offering the cost-saving benefit of washability. Designed for easy installation and long service life, our filter combines precision filtration with robust heat resistance, making it an ideal choice for HVAC systems, paint booths, and general air handling applications.
Our polyester media is specially selected for its excellent thermal stability, mechanical strength, and chemical resistance. The 3-micron rating ensures effective capture of fine dust, pollen, mold spores, and other airborne contaminants, helping to maintain clean air quality and protect downstream equipment. The flange-clamp design provides a secure, leak-free fit without the need for additional hardware, simplifying replacement and maintenance.
Key Features & Technical Specifications
- Filtration Efficiency: 3 micron nominal rating – captures particles as small as 3 µm, suitable for general industrial air cleaning.
- Temperature Resistance: Rated for continuous operation up to 350°F (177°C), allowing use in hot air streams and near heat sources.
- Washable Design: The polyester media can be cleaned with water or mild detergent and reused multiple times, reducing replacement frequency and waste.
- Flange-Clamp Frame: Integrated metal or plastic flange with clamp mechanism ensures snug fit in standard filter holding frames, minimizing bypass.
- Low Pressure Drop: Optimized media density balances high dust holding capacity with minimal airflow resistance, saving energy on fan systems.
- Customizable Dimensions: Available in a wide range of sizes to fit various equipment; contact us for non-standard dimensions.
- Durable Construction: Polyester media bonded to a sturdy support layer, resistant to tearing and deformation under normal operating conditions.
| Parameter | Specification |
| Media Material | Polyester non-woven fabric |
| Filtration Rating | 3 Micron (nominal) |
| Max Operating Temperature | 350°F (177°C) |
| Frame Type | Flange-clamp (metal or plastic) |
| Cleaning Method | Washable with water/detergent |
| Reusability | Multiple cycles (recommended up to 6–8 washings) |
| Typical Applications | HVAC, paint booths, industrial ventilation, oven intakes |
| Custom Sizes | Available upon request |
The combination of high-temperature tolerance and washability makes this filter particularly valuable in applications where disposable filters would quickly become costly. For example, in powder coating lines or drying ovens, the ability to clean and reuse the filter significantly reduces consumable expenses. Additionally, the flange-clamp design ensures a tight seal, preventing unfiltered air from bypassing the media—a critical factor for maintaining indoor air quality standards.
Our manufacturing process follows strict quality control procedures, ensuring each filter meets consistent performance standards. The polyester media is thermally bonded to avoid the use of adhesives that could degrade at high temperatures. We also offer optional metal reinforcement for the flange edge for extra rigidity in larger sizes.
Trust & Reliability from a Proven Manufacturer
Since 1998, Anping County Boli Hardware Wiremesh Products Factory has been a trusted supplier in the filtration industry. With an annual export value exceeding US$5 million, we ship our products to over 15 regions worldwide, including North America, Europe, Southeast Asia, and Oceania. Our factory is located in Hengshui, Hebei—the hardware wire mesh hub of China—giving us access to premium raw materials and skilled labor. We operate from multiple ports (Tianjin, Qingdao, Shanghai, Foshan) to ensure efficient logistics for our global customers.
When you choose our Polyester Flange-clamp Air Filter, you are not just buying a product—you are investing in a solution backed by decades of manufacturing experience, rigorous quality assurance, and a commitment to customer satisfaction. We invite you to contact us for quotes, samples, or custom specifications. Let us help you achieve cleaner air and lower operating costs.
Frequently Asked Questions (FAQ)
Q1: How many times can this filter be washed and reused?
A: The polyester media is designed for multiple wash cycles, typically 6 to 8 times depending on the contamination level and cleaning method. After each wash, inspect the filter for any damage; replace if media shows signs of tearing or excessive wear.
Q2: Can this filter be used in high-humidity or wet environments?
A: While the polyester material is moisture-resistant, the filter is intended for dry air streams. Occasional exposure to condensation is acceptable, but continuous wet conditions may reduce filtration efficiency and lifespan. For wet applications, we recommend consulting our sales team for alternative media options.
Q3: What is the pressure drop across the filter at typical airflow rates?
A: Pressure drop varies with media thickness, air velocity, and dust loading. For a standard 2” thick filter, the initial pressure drop is approximately 0.2–0.4 in. w.g. at 300 fpm face velocity. We can provide specific data for your dimensions and airflow upon request.
Q4: What is the exact temperature limit? Can it withstand 400°F for short periods?
A: The continuous operating temperature is 350°F. Brief excursions up to 400°F (for less than 30 minutes) may be tolerated, but repeated or prolonged exposure above 350°F can cause media degradation. For higher temperature requirements, we offer media options with glass fiber or other heat-resistant materials.
Q5: Are there minimum order quantities (MOQ) for custom sizes?
A: For standard sizes, no MOQ applies. For custom dimensions or special features, the MOQ is typically 100 pieces per size, but we can discuss lower quantities for trial orders. Please contact us with your requirements.
Q6: How do I clean the filter properly?
A: Remove the filter from the housing. Gently tap off loose dust, then rinse with low-pressure water (not exceeding 60 psi) from the clean side to the dirty side. You may use a mild detergent if needed. Allow the filter to air dry completely before reinstalling. Do not use compressed air or high-pressure water, as it may damage the media.
Q7: What certifications does this filter have?
A: Our filters are manufactured under strict internal quality control. While we do not hold third-party certifications for this specific product line, we can provide test reports for filtration efficiency, pressure drop, and temperature resistance upon request. Certifications can be arranged for large-volume orders subject to agreement.
Q8: Can I get a sample before placing a bulk order?
A: Yes, we offer free samples for standard sizes (customer pays shipping). Custom samples are available at a nominal fee, which is refundable upon order placement. Please contact our sales team to arrange a sample.
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