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G2 Metal Mesh Pre-Air Filter | China Suppliers & Factory | High Efficiency Aluminum & Stainless Steel Mesh Filter

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Introducing our high-quality frame crafted from Aluminum sheet, Galvanized steel sheet, and Stainless steel sheet, designed for durability and performance. As a leading supplier and factory based in China, we ensure that our products meet rigorous standards.

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The media components include advanced Aluminum sheet mesh and Stainless steel mesh, known for their efficiency and reliability.

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Our frames are available in two thickness options: 21mm and 46mm, catering to diverse needs. We utilize strong, high-temperature resistant materials for our connecting angles, featuring either robust ABS plastic or aluminum alloy angles for enhanced stability.

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Efficiency ratings are impressive, achieving 40% at 2.0μm and 65% at 2.0μm, in compliance with EN 779 G1 G2 standards.

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This product operates effectively under conditions of up to 70℃ temperature and 90% RH humidity, making it suitable for various environments.

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Choose our China-based factory for your filtration needs and experience top-tier quality and service from trusted suppliers.

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    Application Area

    Metal Mesh Pre-Filters are widely used in Primary Filtration to remove moisture, oil residue, or contaminants from environments.

    Filter Media Materials

    Metal mesh filters do not use any filter paper or chemical fiber materials; their filtration function is entirely achieved through aluminum meshes of different structures and mesh counts. They are mainly divided into the following types:

    Plain Weave Aluminum Mesh

    Description: The most common weaving method, where warp and weft wires are interwoven in an over-and-under pattern, forming square openings.

    Features: Stable structure, high strength, and relatively low cost.

    Applications: Often used as a support layer in filters or for primary filtration where high filtration precision is not required.

    Twill Weave / Dense Weave Aluminum Mesh

    Description: The warp and weft wires are interwoven at a higher density, resulting in smaller mesh openings, and the wire diameter may be thicker.

    Features: Higher filtration precision than plain weave, greater dust-holding capacity, while maintaining good strength.

    Applications: Serves as the main filtration layer in filters, used to capture smaller particles.

    Multi-layer Composite Aluminum Mesh

    Description: The core technology of all-aluminum mesh filters — layering or pressing together aluminum meshes of different mesh counts (pore sizes).

    Structure: Typically a sandwich structure of "support layer + transition layer + fine filtration layer."

    Support Layer: Airflow inlet side; larger pores, thicker wire — pre-filtration and structural support.

    Fine Filtration Layer: Airflow outlet side; very small pores — captures the finest particles.

    Transition Layer: Between the two; gradient mesh counts for depth filtration, extending service life.

    Features: Enables depth filtration with extremely high dust-holding capacity and filtration efficiency.

    Frame Materials

    To maintain structural strength, the outer frame is usually also made of aluminum:

    Aluminum Profile Frame: Formed through an extrusion process — high strength, light weight, rust-resistant, deformation-resistant, stable under high differential pressure.

    Aluminum Alloy Sheet: Sometimes used to create frames through bending processes.

    G2 Metal Mesh Pre-Air Filter (1)G2 Metal Mesh Pre-Air Filter (2)

    The Efficiency of Metal Mesh Pre Filter

    The efficiency of currently available primary efficiency filters ranges from 40% to 65%, and they can be selected based on specific requirements. The rational selection of filter efficiency and face velocity contributes to comprehensive economic benefits.

    Service Life of Filters

    As dust accumulates on the filter media, the resistance increases. When the resistance reaches an unreasonable level, the filter must be discarded. Sometimes, excessive resistance can cause previously captured dust to become dislodged and re-enter the airflow; when this risk arises, the filter should also be replaced.

    The resistance of a filter increases with higher airflow rates. By increasing the surface area of the filter media, the relative velocity of air passing through the filter can be reduced, thereby decreasing the resistance.

    Wind Speed Relationship Diagram

    Metal Mesh Filter

    Product Parameters

    Metal Mesh Filter Parameters
    Remarks: (1) Initial resistance tolerance of ± 10%    (2) Support customer size

    Frequently Asked Questions (FAQ)

    Q What are metal mesh pre-filters primarily used for?
    Metal mesh pre-filters are primarily used in primary filtration applications to remove moisture, oil residue, and airborne contaminants from environments such as HVAC systems, industrial air handling units, and ventilation equipment. They serve as the first line of defense before air passes through higher-grade filters.
    Q What types of aluminum mesh are used in metal mesh filters?
    Metal mesh filters typically use three main types of aluminum mesh: Plain Weave Aluminum Mesh (used as a support layer for basic filtration), Twill Weave / Dense Weave Aluminum Mesh (for higher filtration precision and greater dust-holding capacity), and Multi-layer Composite Aluminum Mesh (combining multiple mesh layers for depth filtration and maximum efficiency).
    Q What is the filtration efficiency range of metal mesh pre-filters?
    The efficiency of currently available primary efficiency metal mesh filters ranges from 40% to 65%. The appropriate efficiency level can be selected based on specific application requirements. Choosing the right balance between filter efficiency and face velocity helps achieve the best overall economic and performance outcome.
    Q How do I know when a metal mesh pre-filter needs to be replaced?
    A metal mesh pre-filter should be replaced when the airflow resistance increases to an unreasonable level due to dust accumulation. Additionally, if excessive resistance causes previously captured dust to become dislodged and re-enter the airflow, replacement is immediately necessary. Regularly monitoring differential pressure across the filter is the most reliable indicator of its condition.
    Q How can the service life of a metal mesh filter be extended?
    The service life of a metal mesh filter can be extended by increasing the surface area of the filter media. A larger filter surface area reduces the relative air velocity passing through the filter, which in turn lowers the resistance build-up rate and slows dust loading — effectively prolonging the filter's operational lifespan before replacement is needed.
    Q Can metal mesh pre-filters be made to custom sizes?
    Yes. Metal mesh pre-filters support customer-specified sizes. The aluminum profile frame — formed through an extrusion or bending process — can be manufactured to meet custom dimensions while maintaining high structural strength, light weight, and resistance to rust and deformation. Please refer to the product parameters for standard size references and tolerance notes.