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Help CenterPolyester Flange-Clamp Air Filter, 48-Inch Length, 12-Inch Width, 4-Inch Depth, G4/MERV 8 Rated
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Anping County Boli Hardware Wiremesh Products Factory, established in 1998, is a professional manufacturer specializing in filtration solutions. We take pride in our Polyester Flange-Clamp Air Filter – a robust, high-performance filter designed for demanding HVAC applications. With dimensions of 48 inches in length, 12 inches in width, and 4 inches in depth, this filter delivers a perfect balance of airflow and particle capture, rated at G4/MERV 8. Our factory’s decades of experience and global export network (US$5M–US$10M annual export value) ensure consistent quality and reliable supply to markets worldwide, including North America, Europe, Asia, and Oceania.
This filter is built with a flange-clamp frame that simplifies installation and replacement, reducing downtime. The polyester media offers high dust-holding capacity and low resistance, making it ideal for pre-filtration in commercial buildings, hospitals, data centers, and industrial facilities. Below, we break down the features, specifications, and benefits that set this product apart.
Key Features & Benefits
- Flange-Clamp Design: The integrated flange eliminates the need for separate holding frames, saving installation time and hardware costs. The clamp mechanism ensures a secure, leak-proof seal in the duct or air handler.
- High-Performance Polyester Media: Made from 100% synthetic polyester fibers, the media is resistant to moisture, mold, and bacteria, providing long service life even in humid environments. It also offers a low initial pressure drop, which reduces energy consumption.
- G4/MERV 8 Rating: This filter effectively captures particles as small as 3–10 microns, including dust, pollen, mold spores, and lint. It is suitable for pre-filtration upstream of HEPA filters or as a standalone filter in standard HVAC systems.
- Standard Dimensions: 48"L × 12"W × 4"D – a common size that fits many commercial and industrial air handling units. Custom sizes are available upon request.
- Durable Construction: The media is pleated for increased surface area, enhancing dust-holding capacity and extending filter life. The flange is made from corrosion-resistant materials, ensuring long-term performance.
- Environmentally Friendly: Polyester media is fully recyclable at end of life, and the filter is designed for easy disposal or incineration without harmful emissions.
Technical Specifications
| Parameter | Value |
| Filter Media | 100% Polyester synthetic fiber |
| Dimensions (L×W×D) | 48 in. × 12 in. × 4 in. (1220 mm × 305 mm × 100 mm) |
| Efficiency Rating | G4 (EN 779) / MERV 8 (ASHRAE 52.2) |
| Initial Resistance | 0.09 – 0.11 in. w.g. (22–27 Pa) at rated airflow (typical) |
| Recommended Final Resistance | 1.0 in. w.g. (250 Pa) |
| Maximum Operating Temperature | 150°F (65°C) |
| Relative Humidity | Up to 100% (non-condensing) |
| Flange Material | Galvanized steel (optional: aluminum or plastic available upon request) |
Why choose our Polyester Flange-Clamp Air Filter? The flange-clamp design significantly reduces installation time – simply slide the filter into the track and secure the clamp. No additional tools or hardware are needed. The high dust-holding capacity means fewer filter changes, lowering maintenance costs. For facilities looking to improve indoor air quality (IAQ) while maintaining energy efficiency, this filter is an excellent choice.
Applications:
- Commercial HVAC systems (offices, retail stores, schools)
- Industrial ventilation (factories, warehouses, clean rooms)
- Data center cooling systems
- Hospital and healthcare facility pre-filtration
- Hospitality and food processing environments
Trust & Quality Assurance
As a factory with over 25 years of manufacturing experience (since 1998), Anping County Boli Hardware Wiremesh Products Factory has exported filtration products worth US$5 million to US$10 million annually to more than 15 countries and regions. Our main markets span North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. We ship from major Chinese ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring timely delivery. Every filter undergoes strict quality control checks to ensure dimensional accuracy, media integrity, and performance consistency. We are committed to providing you with reliable, cost-effective filtration solutions.
Contact us today to discuss your specific requirements, request a sample, or get a competitive quote. Our team of filtration experts is ready to assist you with technical support and customized solutions.
Frequently Asked Questions (FAQ)
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Q: What is the difference between G4 and MERV 8 ratings?
A: G4 is the European standard (EN 779) for coarse filters, capturing particles ≥5 µm with >90% efficiency. MERV 8 is the ASHRAE standard (52.2) for similar performance, capturing particles 3–10 µm. Both ratings are equivalent; our filter meets both standards. -
Q: Can I use this filter in a standard residential HVAC system?
A: Yes, if your system accepts a 48×12×4 inch filter. However, it is more commonly used in commercial or industrial units. Check your filter slot dimensions before ordering. -
Q: How often should I replace the filter?
A: Replacement frequency depends on operating conditions, typically every 3–6 months. Monitor the pressure drop; replace when it reaches the recommended final resistance (1.0 in. w.g.). -
Q: Is the flange-clamp filter compatible with most side-access housings?
A: Yes, the flange design fits standard side-access tracks and slide-in frames. The clamp ensures a tight seal without additional gaskets. We recommend verifying the housing depth (4 inches) before installation. -
Q: Can I get custom dimensions?
A: Absolutely. We offer custom sizes, thicknesses, and frame materials (e.g., aluminum, galvanized steel, plastic). Contact our sales team with your requirements. -
Q: Is the filter media washable or disposable?
A: This filter is disposable. The polyester media is not designed for washing. Dispose of it according to local regulations. It is incinerable and recyclable. -
Q: Does this filter comply with any international standards?
A: It meets EN 779 (G4) and ASHRAE 52.2 (MERV 8) requirements. Additional certifications (e.g., UL, CE) are available upon request; please inquire for specific compliance needs. -
Q: What is the minimum order quantity (MOQ)?
A: Our MOQ is generally 50 pieces per size, but we can accommodate smaller trial orders for new customers. Contact us for details.
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