The Non Woven Fabric Air Filter Cartridge 245×251 is a high-performance, cylindrical air filtration element engineered for the removal of airborne particulates, dust, and lint from industrial, commercial, and residential air handling systems. This air filter cartridge is manufactured to your exact specifications, providing a direct drop-in solution for HVAC units, paint spray booths, compressor intake systems, and general ventilation applications where clean air is essential for equipment protection and occupant health.
Nonwoven fabric filter media is a sheet or web structure of directionally or randomly oriented fibers bonded together through mechanical, thermal, or chemical processes, without the weaving or knitting required for traditional textiles. Unlike woven fabrics, which are produced by interlacing yarns, nonwovens are engineered directly from fibers, offering a unique combination of high particle capture efficiency, low airflow resistance, and design flexibility that makes them the most popular choice for dust collector filters today.
| Outer diameter | 245 mm |
| Height | 251 mm |
| End caps | Aluminum, 304 Stainless steel |
| Filter layer | Non woven fabric |
| Working temperature | -20~+110℃ |
| Origin | Henan, China |
| Manufacturer | Huahang Filter |
This is a kind of custom air filter. If you want to customized the filters, please send details to us to get the price.
Choose the Custom Paper Filter when you need the lowest upfront cost for a perfect fit in a dry environment with a defined maintenance schedule. It’s a simple “remove and replace” solution.
Choose a Washable Polyester Filter if you operate in a high-dust, moist, or demanding environment where the long-term savings of reusability outweigh the higher initial cost and need for cleaning.
Choose an activated carbon filter when your air contains:
Unpleasant odors (cooking, pets, bathrooms, smoke)
Volatile organic compounds (VOCs) from paints, adhesives, cleaning products, new furniture
Formaldehyde (from pressed wood products, building materials)
Chemical fumes (solvents, ammonia, hydrogen sulfide)
Exhaust gases (ozone, nitrogen dioxide, sulfur dioxide)

Huahang Filter is a global manufacturer of industrial filtration products, established in 2003. We operate a modern 26,000㎡ ISO-certified facility and export to more than 120 countries, with exports accounting for over 80% of our business.
As a direct manufacturer, Huahang Filter provides factory‑direct pricing without distributor markups and maintains full material traceability with documentation available upon request. The polyester fabric air filter cartridge is available as a standard stocked size, or can be custom‑manufactured to any dimension, media grade, or end‑cap configuration based on customer drawings or samples.
Choosing Huahang Filter’s air filter cartridge means investing in reliability, cost savings, and peak baler performance.

Q1: What is the difference between nonwoven fabric and paper air filters?
A: Nonwoven synthetic media offers superior durability, moisture resistance, and longer service life compared to cellulose. Cellulose absorbs moisture and fails quickly in humid conditions; nonwoven polyester resists moisture without degrading. While cellulose may cost less initially, nonwoven media achieves significantly higher dust capacities and longer service intervals, making it more cost‑effective over time. Nonwoven also offers better resistance to acids, alkalis, and solvents.
Q2: Can this filter be cleaned and reused?
A: Nonwoven fabric cartridges are generally disposable – they are designed for single use and replacement. The automatic pulse‑jet cleaning system (where applicable) maintains the cartridge in service by dislodging surface dust, but the element itself should be replaced when differential pressure reaches the change‑out point. Do not attempt to wash or water‑clean nonwoven fabric cartridges, as water may not remove embedded particles and can cause media shrinkage or damage.
Q3: How do I know when to replace the filter element?
A: Monitor the differential pressure gauge on your system. Replace the filter when ΔP increases by 25‑50% above the clean baseline (typically 1.0‑1.5 kPa / 4‑6 inches water gauge for dust collectors). Visible dust emission from the exhaust or reduced airflow at supply registers also indicates filter saturation. For HVAC applications, many users replace disposable filters every 3‑12 months, depending on operating conditions.