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EN779 G4 Aluminium frame Washable Panel Pre-Air Filter.jpg
EN779 G4 Aluminium frame Washable Panel Pre-Air Filter.png
EN779 G4 Aluminium frame Washable Panel Pre-Air Filter.jpg
EN779 G4 Aluminium frame Washable Panel Pre-Air Filter.png

China EN779 G4 Aluminium Frame Washable Panel Pre-Air Filter | Quality Suppliers & Factory

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【Frame】 Our high-quality air filters come with a robust frame made from durable materials including cardboard, aluminum sheet, and galvanized steel sheet, ensuring reliability and longevity.

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【Media】 Featuring advanced synthetic fiber media, our filters provide superior filtration efficiency.

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【Thickness of Frame】 Available in three thickness options: 21mm, 46mm, and 96mm to meet diverse needs.

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【Efficiency】 Achieve outstanding filtration efficiency rates of 40% at 2.0μm, 65% at 2.0μm, 85% at 2.0μm, and an impressive 90% at 2.0μm.

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【Standard】 Complying with the EN 779 standards, our filters are categorized under G1, G2, G3, and G4 classifications.

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【Operating Conditions】 Designed to operate effectively in environments with temperatures up to 70℃ and humidity levels up to 90% RH.

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As a leading factory and supplier in China, we pride ourselves on delivering high-performance air filtration solutions tailored to meet your specific requirements.

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    Product Details

    🏭 Application Area

    Washable Panel Pre-filters are widely used in Clean rooms, commercial and industrial air conditioning and ventilation systems, central air conditioning, and other related industries.

    🔬 Filter Media Materials

    The filter media is the part that actually performs the filtration. Common types include:

    Metal Mesh

    Characteristics: Typically aluminum or stainless steel mesh; washable, reusable, with good durability.

    Used in situations requiring higher standards and reusable, but the cost is higher than that of paper media.

    Synthetic Fiber

    Characteristics: This is currently the most mainstream and common filter media. It is usually a non-woven fabric made from polyester fiber.

    Advantages: The fibers are fluffy with uniform gaps, providing high dust-holding capacity; relatively low resistance; possesses a certain stiffness, allowing it to be self-supporting (used with a cross-sectional design).

    Form: The surface is usually pleated to create an uneven texture, increasing the filtration area and reducing resistance.

    Glass Fiber

    Characteristics: Now less commonly used in primary filters and more frequently used in medium-efficiency filters. It offers stable performance but is relatively brittle.

    EN779 G4 Aluminium frame Washable Panel Pre-Air Filter (1)EN779 G4 Aluminium frame Washable Panel Pre-Air Filter (2)
    🧹 The Correct Way to Clean the Washable Panel Pre Filter
    1. Removal: Turn off the system and carefully remove the filter.
    2. Pre-cleaning: Use a vacuum cleaner to remove heavy surface dust from both sides of the filter media.
    3. Rinsing: Use a low-pressure water stream (e.g., from a shower head) to rinse from the clean side (usually the air intake side) towards the dirty side (air outlet side). Always follow this direction to prevent driving dirt deeper into the fibers. Keep the water stream gentle and perpendicular; do not rinse at an angle.
    4. Inspection & Drying: After rinsing, check for any remaining visible stains. If dirt is deeply embedded and difficult to wash out, it indicates the end of its usable life, and replacement should be considered. Thoroughly shake off excess water and let the filter dry completely in a cool, well-ventilated area. Never expose to direct sunlight or use heat to dry, as this can deform the frame.
    5. Re-installation: Ensure the filter is completely dry before reinstalling. Installing it damp can promote mold growth and damage the system.
    ⚖️ Advantages & Limitations
    ✅ Advantages
    💰 Low long-term cost of ownership.
    🏗️ Stable physical structure; aluminum frame is resistant to damage.
    🔧 Simple maintenance; users can perform it themselves.
    🌿 Environmentally friendly.
    ⚠️ Limitations
    🚫 Cannot filter fine particles: Largely ineffective against PM2.5, smoke, bacteria, viruses, etc.
    📉 Slight efficiency drop after cleaning: With repeated cleanings, some fiber structure may alter, leading to a slight reduction in filtration efficiency.
    ⏳ Requires patient maintenance: The cleaning and lengthy drying process takes time.
    💧 Not suitable for damp or oily environments: Oily particles will adhere to the media and cannot be washed out with water.
    📊 Wind Speed Relationship Diagram
    EN779 G4 Aluminium frame Washable Panel Pre-Air Filter (1)
    📋 Product Parameters
    EN779 G4 Aluminium frame Washable Panel Pre-Air Filter (2)
    Remarks: (1) Initial resistance tolerance of ±10%    (2) Support customer size
    ❓ Frequently Asked Questions (FAQ)
    💬 Q1: How often should I clean the Washable Panel Pre Filter?
    The cleaning frequency depends on the environment and usage conditions. In general, it is recommended to inspect the filter every 1–3 months and clean it when visible dust accumulation is detected. In high-dust environments, more frequent cleaning may be required.
    💬 Q2: Can I use detergent or soap to clean the filter?
    Mild, neutral detergent may be used if necessary, but it must be thoroughly rinsed out with clean water afterwards. Avoid harsh chemicals, bleach, or solvents, as these can damage the filter media and reduce filtration efficiency.
    💬 Q3: How do I know when the Washable Panel Pre Filter needs to be replaced?
    The filter should be replaced when: the filter media shows visible tears or structural damage; stubborn stains or embedded dirt cannot be removed after washing; the frame is warped or deformed; or after repeated cleanings when filtration performance has noticeably declined.
    💬 Q4: What efficiency grade is this filter, and what particle sizes does it capture?
    This Washable Panel Pre Filter is rated G4 according to EN779 standard. It is designed to capture larger airborne particles such as dust, pollen, lint, and debris. It is not effective against fine particles such as PM2.5, smoke, bacteria, or viruses — a higher-efficiency filter should be used downstream for those purposes.
    💬 Q5: Are custom sizes available for the Washable Panel Pre Filter?
    Yes. Custom sizes are supported to fit specific HVAC systems and installation requirements. Please contact us with your specifications and we will provide a tailored solution.
    💬 Q6: Is the aluminum frame durable enough for long-term industrial use?
    Yes. The aluminum frame offers excellent rigidity, corrosion resistance, and dimensional stability. It maintains its shape through repeated cleaning cycles, making it highly suitable for long-term use in both commercial HVAC systems and industrial ventilation environments.