In cleanroom air handling systems and high-humidity industrial manufacturing lines, standard cardboard or light-duty frames often fail due to moisture warping, structural sagging, and corrosion. The G3/G4 Aluminum Frame Pleated Air Pre-Filter delivers a heavy-duty, corrosion-proof primary filtration shield engineered to maintain structural integrity under continuous, high-velocity airflow.
- Structural Integrity: Rigid extruded aluminum frame prevents frame distortion and maintains perfect perimeter seals under turbulent cleanroom airflow.
- HEPA & Medium Filter Protection: Captures coarse dust particles (5 microns and larger) at the initial intake phase, shielding expensive secondary and terminal HEPA filters from heavy particulate loading.
- Corrosion Resistance: Anodized aluminum profile withstands high relative humidity and aggressive chemical environments without rusting or degradation.
- Reduced Lifetime TCO: High dust capacity and option for washable synthetic media significantly reduce long-term consumable maintenance budgets.
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Engineered for critical ventilation environments, this aluminum profile panel filter combines streamlined mechanical aerodynamics with high-efficiency synthetic pleat geometry.
- Extruded Anodized Aluminum Profile: Lightweight yet extremely sturdy frame design featuring smooth surface finishes to prevent fiber snagging and contamination buildup.
- Aerodynamic Low-Resistance Media: Premium synthetic fiber pleats allow uniform airflow distribution, dramatically reducing fan static pressure requirements.
- Moisture & Mold Resistance: Non-hygroscopic synthetic media eliminates bacterial growth, fungi risk, and moisture absorption in wet air processing zones.
- Precision Corner Joint Assembly: Reinforced mitered corners eliminate frame distortion during installation, ensuring seamless fitment into AHU filter banks.
| Specification | Value |
| Filter Class (EN779 / ISO 16890) | G3 / G4 (Coarse 50% – 65%) |
| Target Filtration Efficiency | Intercepts airborne particulate matter >= 5 microns |
| Standard Frame Depths | 21mm, 25mm, 46mm, 96mm (Custom profiles available) |
| Available Nominal Sizes | 295×295, 495×295, 495×495, 595×295, 595×495, 595x595mm / Custom |
| Filter Media Material | High-capacity non-woven polyester blend |
| Frame Material | Anodized Extruded Aluminum Profile |
| Initial Resistance | ~35 Pa (G3) / ~45 Pa (G4) at nominal velocity |
| Recommended Final Resistance | 150 – 250 Pa |
| Max Operating Temperature | Continuous 80°C (176°F) |
| Max Relative Humidity | 100% RH (Corrosion resistant & moisture proof) |
The G3/G4 aluminum frame pleated pre-filter is tailor-made for demanding sanitary and high-durability industrial air systems:
Equipment Compatibility: Fits directly into cleanroom Air Handling Units (AHUs), fresh air makeup units (MAUs), rooftop units (RTUs), and fan filter unit (FFU) intake grills.
Pharmaceutical & Biotech Facilities: Ideal as a primary pre-filter in sterile processing facilities where rust-proof and cleanable components are required.
Electronics & Semiconductor Plants: Intercepts coarse airborne dust ahead of ISO-class cleanroom fine filters to prevent yield-reducing contamination.
Facility managers should implement scheduled pressure monitoring to maintain peak energy efficiency and operational uptime:
Cleanroom & Precision Manufacturing Conditions: In controlled ISO environments, inspect differential pressure monthly; clean or replace filters every 90 to 120 days.
High-Humidity / General Industrial Intake: In damp or heavy ambient intake applications, replace or service media every 45 to 60 days when reaching the designated terminal pressure limit.
Maintenance Protocol: Utilize built-in magnehelic pressure gauges to track resistance trends, optimizing bulk replacement cycles and preventing fan motor drag.
Frequently Asked Questions
Q1: Why choose an extruded aluminum frame over cardboard or steel for cleanroom pre-filtration?
A1: Aluminum profile frames are completely rust-proof, extremely lightweight, and non-sloughing, making them ideal for sterile cleanroom environments where paper fiber shed or metal oxidation cannot be tolerated.
Q2: Are the G3 and G4 synthetic media options washable or reusable?
A2: Depending on the specific synthetic media option specified during bulk order placement, many aluminum frame pre-filters can be gently vacuumed or water-washed 1-2 times before replacement, offering lower overall replacement costs.
Q3: Can you manufacture custom aluminum frame thicknesses beyond standard 21mm and 46mm profiles?
A3: Yes. As a direct B2B air filter manufacturer, we provide full custom extrusion and fabrication. We can produce custom outer frame depths (e.g., 21mm, 25mm, 46mm, 96mm) and exact face dimensions to match your exact AHU specifications.
Q4: How does this filter achieve ultra-low initial pressure drop in cleanroom air handling systems?
A4: The precision-pleated synthetic media maximizes effective surface area while maintaining open pleat spacing. This aerodynamic geometry reduces resistance to airflow, enabling fans to operate efficiently with lower energy consumption.
Q5: What quality control standards and packaging are used for bulk B2B cleanroom filter shipments?
A5: Every batch undergoes strict EN779/ISO16890 efficiency verification. Filters are individually poly-bagged to prevent contamination, then packed in heavy-duty shipping cartons and stretch-wrapped on export pallets for safe transit.
