Polyester Fabric Air Filter Cartridge 121x404
Product description
The Polyester Fabric Air Filter Cartridge is a durable, high-performance filtration solution designed for industrial ventilation, dust collection, and HVAC systems. Constructed from thermally bonded non-woven polyester fabric, this cartridge offers excellent mechanical strength, chemical resistance, and cleanability. Unlike disposable paper or synthetic filters, this polyester fabric cartridge is fully washable and reusable, significantly reducing consumable waste and long‑term operating costs.
The dimensions of the filter is optimized for compact yet high‑capacity filter housings, providing a large effective filtration area without occupying excessive space. The open‑pore fabric structure captures coarse and fine dust particles, pollen, lint, and other airborne contaminants while maintaining low initial pressure drop. Its robust construction withstands repeated cleaning cycles, exposure to moisture, and mild chemical environments, making it ideal for workshops, paint booths, agricultural ventilation, compressor intakes, and industrial dust collectors.
PRODUCT SPECIFICATIONS
Note: Specifications are based on standard configurations. Huahang Filter‘s engineering team can customize parameters to meet specific application requirements.
Please send your inquiry to get a quote.
Product Attribute |
Specification |
Dimension |
121 mmx404 mm |
Media |
Polyester fabric |
End caps |
304 Stainless steel |
Support core |
304 Stainless steel diamond mesh |
Package |
Neutral carton package |



product features
Washable & Reusable: Clean with low‑pressure water, vacuum, or gentle compressed air. One cartridge can be reused many times , drastically reducing consumable costs and landfill waste.
High Dust‑Holding Capacity: The three‑dimensional, non‑woven fabric structure captures and retains a large volume of particulate without rapid pressure drop increase, extending service intervals.
Low Initial Pressure Drop: Permeable media ensures minimal airflow resistance, reducing fan energy consumption and operational costs.
Durable Construction: Thermally bonded fabric resists tearing, fraying, and media migration even under high airflow or vibration.
1. Special design can achieve an effective filtration area of 100%;
2. Each component adopts a seamless fusion method, which solves many problems that originally existed in use and ensures safety;
3. The design adopts a metal folding frame, which can be reused and replaced;
4. The density of the filter material shows an increasing structure, achieving high efficiency, low resistance, and large dust capacity;
Special design can achieve an effective filtration area of 100%;
2. Each component adopts a seamless fusion method, which solves many problems that originally existed in use and ensures safety;
3. The design adopts a metal folding frame, which can be reused and replaced;
4. The density of the filter material shows an increasing structure, achieving high efficiency, low resistance, and large dust capacity;
PRODUCT APPLICATION
The Polyester Fabric Air Filter Cartridge is suitable for a wide range of industrial and commercial air filtration applications:
- * Industrial dust collectors: Pre‑filtration or main filtration for baghouses, cartridge collectors, and cyclone exhausts.
- * Ventilation systems: Workshops, paint booths, welding areas, and food processing facilities requiring washable, reusable filters.
- * Agricultural ventilation: Greenhouses, livestock barns, grain dryers, and crop storage where humidity is high and frequent filter changes are impractical.
- * Air compressor intakes: Protecting rotary screw compressors from dust and debris, especially in dusty environments.
- * Spray booths: Capturing overspray and particulate in painting operations; washable design reduces operating costs.
manufacturer of dust collector filter
Huahang Filter has been manufacturing dust collector filter cartridges for over twenty years. We make all these types—polyester, cellulose, PTFE membrane, anti-static, flame-retardant, fiberglass. Standard sizes and custom dimensions.
Our 26,000㎡ modern facility houses advanced automated production lines, including precision pleating machines and CNC processing equipment. This technological foundation enables us to maintain strict tolerances and consistent quality across every production run, whether manufacturing a single prototype or fulfilling high-volume OEM orders. Each filter cartridge undergoes rigorous dimensional verification and performance testing, ensuring perfect fit and reliable operation in demanding industrial environments.
REASONS FOR CHOOSING HUAHANG FILTER
* Vertically integrated manufacturing, quality control at the source: From filter media selection to finished product assembly, we operate the entire supply chain in-house. Our filter elements are precisely sized and offer stable performance, providing premium quality at factory-direct prices.
* Deep understanding of industrial dust removal, professional engineering support: Over twenty years of industry experience have given us a profound understanding of different operating conditions. Our engineering team can accurately recommend filter media and surface treatment solutions based on your dust characteristics, temperature, humidity, and other parameters, ensuring optimal filtration efficiency and lifespan.
* End-to-end quality control, reliable product delivery: We implement end-to-end quality monitoring from raw material intake and production to finished product testing. Every filter element undergoes rigorous inspection before leaving the factory to ensure perfect fit and reliable operation in your dust removal system.
* Global market validation, widespread trust: Our products are sold in over 120 countries worldwide and operate stably in industries such as cement, mining, woodworking, and metal processing. Twenty years of consistent quality is the cornerstone of our global customer trust.
* Response is fast and flexible, and customization is a one-stop solution: Whether it is non-standard size or special treatments such as flame retardancy, waterproofing, oil resistance, and antistatic properties, our R&D team can respond quickly and provide full-process customization services from prototyping to mass production.

faq
Q1: What is the difference between paper and polyester fabric media?
A: Paper media offers excellent filtration efficiency (F7-F9) at a lower cost and is suitable for general industrial applications. Polyester fabric provides higher durability, better temperature resistance (up to 120°C), and is often cleanable and reusable . Polyester also offers better moisture resistance and is available with various surface treatments.
Q2: Can I use this filter for oil mist or sticky dust?
A: Standard polyester fabric may blind with oil. For oily applications , we recommend oleophobic‑coated polyester – available upon request. Please specify your application when ordering.
Q3: Is this cartridge compatible with high‑temperature air streams?
A: Standard polyester is rated for continuous operation up to 100°C . For higher temperatures (e.g., drying ovens, exhaust), consider our glass fibre, PTFE, or sintered metal filters.
Q: How to choose the suitable air filter media?
A: Selecting the right media depends on three factors:
(1) Dust characteristics – dry dust (wood, grain, cement) works well with standard polyester; oily or sticky dust requires oleophobic‑coated media.
(2) Operating temperature – polyester is suitable up to 100°C; above that, choose glass fibre (120°C) or PTFE/sintered metal (260°C+).
(3) Efficiency requirement – for coarse pre‑filtration , polyester fabric is ideal; for fine dust or absolute-rated capture , switch to glass fibre or synthetic fine‑fibre media.
Tell us your dust type, temperature, and target efficiency – our engineers will recommend the optimal media for your application.

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