Engineered for intense industrial operating environments, this 495x495x50mm G2 fiberglass flat filter combines a rigid galvanized zinc-steel frame with thick progressive glass fiber media to deliver high-capacity primary filtration for severe heavy duty oil mist and particulate loads.
Heavy machining shops, CNC centers, and metal stamping plants generate dense airborne oil mists that cause standard HVAC panel filter frames to buckle and media to saturate rapidly. Our specialized zinc-steel frame filter flat panel unit solves structural collapse in high-humidity, oily air streams. The high-density fiberglass structure holds heavy liquid particulate loads without disintegrating, guaranteeing steady airflow and continuous mist collection across demanding factory floors.
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Featuring a robust 2 inch air filter depth profile (50mm thickness) enclosed in a heavy-gauge zinc-coated steel frame, this filter exhibits remarkable torsional strength under extreme face air velocities.
Corrosion-Resistant Galvanized Frame: Prevents rust formation, warping, and structural fatigue caused by continuous exposure to cutting fluids and coolant vapors.
Dual-Side Metal Retainer Grids: Heavy metal grids on both air-entering and air-leaving sides stabilize the progressive fiberglass bed, preventing media migration.
Zero Air Bypass: Rigid perimeter construction ensures continuous total sealing inside high-pressure air handler units (AHUs) and CNC intake plenums.
| Parameter | Specification |
| Product Model | CQ-FF-49549550-G2 |
| Dimensions (W x H x D) | 495 x 495 x 50 mm (Nominal 20 x 20 x 2 Inch) |
| Filter Class / Efficiency | G2 (EN779:2012) / MERV 4 (ASHRAE 52.2) |
| Filter Media Material | High-Density Progressive Fiberglass Mat |
| Frame Material | Heavy-Gauge Galvanized Zinc-Steel |
| Media Retainer | Dual-Side Galvanized Wire Mesh / Metal Grid |
| Initial Resistance | ~25 Pa – 35 Pa (at 1.5 m/s face velocity) |
| Recommended Final Resistance | 200 Pa |
| Temperature Limit | Up to 120°C (248°F) |
| Relative Humidity Resistance | Up to 100% RH |
Fully customizable specifications available. For detailed technical data, please 【visit the product page】 or 【reach out to our technical team】directly.
Designed as an essential primary pre-filter stage, this 495x495x50mm model captures heavy liquid oil droplets, coolant mist sprays, and coarse metallic dust before contaminated air reaches expensive secondary bag filters or electrostatic precipitators (ESP).
Primary Pre-Filter Protection: Prolongs the working lifespan of downstream fine filters and secondary ventilation components.
Heavy Industrial Environments: Engineered specifically for metalworking lines, CNC mist processing cabinets, automotive stamping plants, foundries, and heavy machinery production.
Factory HVAC Systems: Integrates directly into industrial ventilation trunks and commercial air filtration system networks handling high particulate loads.
In demanding industrial oil mist environments, replacement schedules are optimal when dictated by differential pressure monitoring. The extra 50mm media depth delivers superior dust and oil-holding capacity compared to shallow panel designs.
Extended Replacement Intervals: Provides up to 2.5x higher holding capacity than standard 1-inch (25mm) filters, significantly lengthening time between maintenance shut-downs.
Lower Operational Costs: Minimizes change-out labor expenses and reduces filter disposal volume in high-volume manufacturing plants.
Differential Pressure Efficiency: Maintained low initial resistance (~25-35 Pa) ensures optimal fan performance and reduced energy consumption.
Frequently Asked Questions
Q: Why is the zinc-steel frame essential for heavy-duty oil mist processing compared to aluminum or card frames?
A: In heavy machining and CNC metalworking environments, air streams carry sticky cutting fluids, coolant aerosols, and high pressure. Aluminum frames can flex under heavy vibration, and cardboard frames collapse entirely when wet. Our heavy-gauge zinc-steel frame filter provides maximum torsional rigidity and zero corrosion, holding its precise shape under high face velocities and heavy liquid loading.
Q: How does the 50mm (2 inch) depth improve dust and oil holding capacity in factory setups?
A: The 2 inch air filter media bed holds up to 2.5 times more glass fiber mass than standard 1-inch panels. This expanded 3D filament depth allows liquid oil droplets to coalesce and drain downwards while dry metallic dust is trapped inside the fiber web, dramatically extending maintenance cycles and protecting your commercial air filtration system from rapid pressure spikes.
Q: Can this fiberglass flat filter capture fine coolant mists and smoke particles?
A: As a high-performance G2 primary barrier, it intercepts coarse mist droplets, coolant sprays, and heavy metal particulates (5-10 microns and larger) with high efficiency. For sub-micron smoke, it acts as an essential pre-filter that protects downstream electrostatic precipitators (ESP) or high-efficiency secondary bags from liquid oil fouling.
Q: Is the glass fiber media fire-resistant for high-temperature welding or hot metalworking applications?
A: Yes. Glass fiber is inherently non-combustible and complies with Class K1/F1 fire safety ratings. It withstands continuous operating temperatures up to 120°C (248°F) and resists ignition from stray metal sparks, making it a safe choice for air filters for factories, automotive stamping bays, and welding workshops.
Q: How does this primary filter protect expensive industrial exhaust fans and ductwork?
A: Unfiltered oil mist attaches to fan impellers, causing imbalance, motor burnout, and fire hazards inside exhaust ducts. By capturing oil aerosols at the source, this fiberglass flat filter keeps internal fan blades clean and duct interiors dry, significantly reducing duct-cleaning overhead and facility fire risks.
