Aluminium Frame Nylon Mesh air filter

These filters are primarily used for pre-filtration in HVAC systems and other ventilation applications, offering low resistance and high airflow. They are a cost-effective and durable option, especially for catching larger dust particles. 

Construction

Frame: The rigid, lightweight aluminium alloy frame is corrosion-resistant and provides durability. Some models may have handles for easier removal and replacement.

Filter Media: Woven polyamide monofilament fibers create a synthetic nylon mesh media. Some filters feature multiple layers of mesh to enhance filtration and capture efficiency.

Structure: Filters are often designed as a panel. The internal support frame is typically made of hard metal wire, such as galvanized or stainless steel, to prevent deformation. 

Performance and features

Filtration Class: They generally fall into the G1-G4 (EN779) or MERV1-MERV4 (ASHRAE 52.2-2007) categories, making them suitable for coarse dust removal.

Low Resistance: The design provides low initial pressure drop, which allows for large air volumes to pass through without straining the ventilation system.

High Strength: The combination of a robust aluminium frame and high-strength nylon mesh provides good wear and impact resistance.

Washable and Reusable: A major advantage is that the filters can be washed repeatedly with water and mild detergent without compromising their filtration efficiency. This extends their service life and makes them a highly economical choice.

Chemical Resistance: The materials are resistant to acids and alkalis, which is beneficial in certain industrial environments.

Temperature and Humidity Tolerance: The filters can withstand high temperatures (up to 80-100°C) and 100% relative humidity, making them suitable for demanding conditions. 

Common applications

HVAC Systems: They are widely used as pre-filters in central air conditioning systems for buildings, protecting more expensive fine filters from large particles.

Cleanrooms and Labs: These filters serve as pre-filters in cleanroom ventilation systems and for general dust removal in manufacturing settings.

Commercial and Public Buildings: Found in the ventilation systems of office buildings, hospitals, airports, shopping malls, and conference rooms.

Other Industrial Uses: Applications include industrial ventilation equipment, paint spray booths, and kitchen exhaust hoods. 

Maintenance

Cleaning: The washable nature of these filters allows for regular cleaning. They can be soaked in warm, soapy water and scrubbed with a soft brush to remove dust and grime. For greasy filters, a degreaser can be used.

Drying: After cleaning, it is crucial to let the filter air-dry completely before reinstallation to prevent corrosion of the frame and moisture buildup.

Replacement: While reusable, the filter should be replaced if the mesh becomes warped, damaged, or can no longer be adequately cleaned. A cleaning and replacement schedule is recommended for optimal performance. 

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