Industrial spray booths and paint finishing lines face severe operational challenges. Airborne dust, paint overspray, and ambient particulates quickly clog high-efficiency secondary filters like ceiling diffusion media and HEPA filters.
When using sub-standard, fragile panel filters, facilities often experience:
Frequent Filter Failure: Cheap frames bend under high air velocity, causing air bypass and contamination.
Escalating Maintenance Overhead: Rapid clogging of downstream fine filters leads to unexpected downtime and high replacement costs.
Unstable Airflow & Pressure: Moisture and heavy dust compromise filtration efficiency, disrupting spray room balance.
Our G4 Washable Intake Pre-Filter is engineered specifically for primary air handling. Featuring a high-dust-capacity progressive synthetic media, it captures large particulate matter right at the air intake. By acting as a robust frontline barrier, it protects critical HVAC components and significantly reduces the Total Cost of Ownership (TCO) for automotive refinishing shops and industrial coating plants.
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Designed for continuous, heavy-load ventilation, this G4 panel filter combines structural rigidity with re-usable filter media to maximize operational lifespan.
Heavy-Duty Aluminum Frame: Constructed from extruded aluminum alloy and reinforced with a double-sided galvanized steel wire skeleton. It will not warp, rust, or collapse under high face velocities or moist operating conditions.
Progressive Blue & White Synthetic Media: The dual-color layer utilizes a graduated density design. The outer blue layer traps larger dust particles, while the inner white layer captures fine particulates—delivering superior dust holding capacity with minimal air resistance.
Washable & Eco-Friendly Design: Unlike disposable cardboard filters that degrade quickly, our synthetic media can be cleaned multiple times via compressed air blowing or water washing.
Procurement Advantage: Lower initial resistance (<= 50 Pa) reduces fan motor strain and energy consumption, offering HVAC contractors an economical, sustainable, and highly durable filtration solution.
| Specification | Value |
| Filter Class (EN779 / ISO 16890) | G4 / ISO Coarse 65% |
| Filter Media Material | Washable Blue & White Progressive Synthetic Fiber |
| Frame Material Option | Extruded Aluminum Alloy / Galvanized Steel Sheet |
| Internal Skeleton Support | Galvanized Steel Wire Dual-Layer Skeleton |
| Filter Thickness Options | 46 mm / 96 mm /custom |
| Initial Pressure Drop | <= 50 Pa |
| Target Particle Arrestance | >= 5 um airborne dust particles |
| Washability & Maintenance | Washable with clean water or low-pressure compressed air |
Fully customizable specifications available. For detailed technical data, please 【visit the product page】 or 【reach out to our technical team】directly.
This versatile G4 pre-filter seamlessly integrates into various industrial air handling systems, serving as the primary pre-filtration stage across multiple light-to-heavy dust environments.
Primary Compatible Equipment:
Air Handling Units (AHUs) & Makeup Air Units (MAUs)
Spray Booth Air Supply & Fresh Air Units
Rooftop HVAC & Industrial Ventilation Ducts
Cleanroom Pre-Filtering Stations
Key Target Industries:
Automotive & Industrial Coating: Protects paint spray lines and drying rooms from coarse particle intrusion.
Manufacturing & Woodworking: Filters airborne dust before it reaches secondary bag or HEPA filters.
Commercial & Cleanroom Facilities: Serves as a reliable fresh air pre-filter for commercial HVAC and workshop intake louvers.
Whether deployed in standard office ventilation or high-dust industrial spray booths, this panel filter maintains stable airflow, protects downstream machinery, and extends your overall system service life.
Light-to-Medium Duty Commercial Ventilation: In standard office HVAC systems and clean workshop air intake units, the filter requires routine inspection every 3 to 4 months. With periodic dry-compressed air blowing, the service lifecycle reaches 6 to 12 months before media replacement.
Heavy-Duty Industrial Spray Booths & High-Dust Environments: In paint spraying, woodworking, and metal processing environments with heavy particle loading, monitor filter pressure drop using differential pressure gauges. Clean or wash the media when initial resistance doubles (~100 to 125 Pa), typically every 1 to 2 months. Replace the filter after 3 to 4 wash cycles to maintain rated filtration efficiency.
Frequently Asked Questions
Q1: Can this G4 intake pre-filter media be washed multiple times without losing efficiency?
A1: Yes. The progressive blue and white synthetic fiber media is designed for repeated air-blowing or water-washing. It maintains structural integrity and nominal G4 dust arrestance over multiple maintenance cycles in spray booth environments.
Q2: Is the extruded aluminum frame suitable for high-humidity spray booth environments?
A2: Absolutely. The corrosion-resistant aluminum alloy frame, paired with galvanized steel skeleton support, resists rust and moisture, preventing frame warping and air bypass during humid air intake operations.
Q3: Do you support custom frame dimensions for specialized AHUs and spray booths?
A3: Yes, as an industrial OEM factory supplier, we manufacture custom sizes in 46mm and 96mm frame depths alongside standard sizes like 595 x 595 mm to match specific client equipment specifications.
Q4: What is the initial airflow resistance for this G4 panel pre-filter?
A4: The initial pressure drop is approximately 50 Pa at standard rated airflow, delivering low energy consumption and stable ventilation performance across AHUs and paint booth supply fans.
Q5: How does using a G4 pre-filter lower overall HVAC maintenance costs?
A5: By capturing coarse particles (>= 5 um) at the air intake, this pre-filter extends the operational lifespan of expensive secondary bag filters and terminal HEPA filters, drastically reducing facility maintenance overhead.
