Metal Frame Flat Pre Air Filter: Washable & Low Resistance Industrial Solution
Washable & Reusable Design: Engineered with heavy-duty G4 polyester fiber media, our washable G1/ G2/ G3/ G4 synthetic fiber panel filter supports multiple cleaning cycles, turning routine facility maintenance into a long-term cost-saving asset.
Energy-Saving Low Resistance: Featuring an ultralow initial static pressure drop of just 25 Pa, this metal frame flat pre air filter minimizes fan motor load, optimizes system airflow, and directly reduces factory electricity expenses.
Dual-Side Wire Mesh Reinforcement: Functioning as a high-durability metal mesh panel air pre filter, its rigid grid matrix prevents media deformation, flexing, or collapse under high CFM airflow, guaranteeing maximum structural stability.
Corrosion-Resistant Protection: Designed for harsh spray booth and industrial AHU environments, this panel style metal frame filter utilizes chemically inert media that resists degradation from organic solvents, adhesive vapors, and aggressive chemical mists.
Leak-Proof Structural Integrity: The precision-engineered frame creates a bypass-free seal within duct tracks, ensuring consistent primary filtration efficiency and total protection for downstream secondary and HEPA filter systems.


Flexible OEM/ODM Manufacturing: Custom Size Flat Panel Air Filters
We provide full-scale customization to meet the strict demands of global engineering projects. Our Metal Frame Flat Pre Air Filter and OEM fabrication services include:
Flexible Dimensions & Media: Full support for 21mm, 25mm, 46mm thickness filter specifications. We fully customize face dimensions and integrate heavy-duty polyester fiber media to fit non-standard or legacy AHU equipment rails perfectly.
Frame Versatility: Choose from corrosion-resistant extruded aluminum, high-rigidity galvanized steel, or hardened paper to build a panel style metal frame filter tailored to your specific budget and site needs.
OEM/ODM Support: As a leading source manufacturer, we provide end-to-end production for your G1/ G2/ G3/ G4 Synthetic Fiber Panel Filter batch orders. Each unit is constructed as a rugged metal mesh panel air pre filter, ensuring perfect lot-to-lot structural consistency for large-scale engineering tenders.
Flat Panel Air Filter Applications for Industrial & Commercial Systems
Commercial HVAC Systems: Optimized as a high-efficiency flat panel air filter for commercial HVAC systems, this unit captures airborne coarse dust, protecting cooling coils and maintaining steady airflow across shopping malls, office complexes, and public facilities.
Cleanroom AHU Integration: Delivering critical cleanroom AHU air supply pre filtration flat panel performance, our filters act as a reliable first-stage defense to intercept larger particulates before they reach expensive secondary and HEPA filter units.
Industrial Paint Lines: Engineered with chemical-resistant media, our anti corrosive spray booth intake flat panel filter safely handles solvent vapors and resinous mists, preventing ductwork buildup in automotive paint lines and industrial spray booths.
Factory Ventilation: Designed for demanding facility maintenance, this metal frame flat panel filter for factory dust collection operates with ultra-low static resistance across industrial air handling units, minimizing fan motor strain and electricity costs.
Flat Panel Air Filter Competitive Comparison
| Comparison Dimension | Chuqi Flat Panel Air Filter (Factory Direct) | Standard Market Alternatives |
|---|---|---|
| Compliance & Quality | Full adherence to EN779/ISO standards; 20-year factory quality assurance with batch-inspected primary flat panel filters. | Generic filters without documented industrial certifications, leading to performance drops and compliance liability. |
| Filtration Stability | Advanced G1-G4 synthetic fiber media ensures stable capture of ≥5μm particles without structural collapse under high-velocity air. | Low-grade media that sags or loses integrity under humidity, leading to dust breakthrough and downstream contamination. |
| Bulk Supply Capacity | Automated assembly lines ensure stable mass production for metal frame flat pre air filter container orders and fast engineering delivery. | Small workshops lacking volume capacity, resulting in long lead times and quality variations between shipments. |
| Build & Durability | Heavy-duty washable aluminum frame pre filter construction with double-sided wire mesh grids to prevent deformation. | Flimsy cardboard or thin frames prone to buckling, causing air bypass that ruins downstream HEPA filters. |
| Energy Performance | Engineered with 25Pa-35Pa initial resistance, our low resistance flat panel filter cuts fan load and factory electricity bills. | High static pressure designs that force fan motors to overwork, causing overheating and massive energy waste. |
| Customization Ability | Direct source factory support for custom size flat panel air filters (21mm, 25mm, 46mm thickness) for legacy AHU tracks. | Limited to standard retail sizes; unable to customize frame materials or non-standard face dimensions. |
Flat Panel Air Filter Engineering Specifications & Parameters
| External dimensions (mm) | Rated air volume (m³/h) | Initial resistance (Pa) | Efficiency (Level) | Filter media model |
|---|---|---|---|---|
| 295 × 295 × 21 mm | 800 m³/h | 35 Pa | 25%~40% (G2/G3/G4) | Non-woven polyester fiber blend filter media Polycotton |
| 495 × 295 × 21 mm | 1300 m³/h | |||
| 495 × 495 × 21 mm | 2200 m³/h | |||
| 595 × 295 × 21 mm | 1600 m³/h | |||
| 595 × 495 × 21 mm | 2700 m³/h | |||
| 595 × 595 × 21 mm | 3200 m³/h |
Note: These are standard specifications. For custom sizes or technical inquiries, 【please contact our engineering team.】
we manufacture our own synthetic filter media in-house, giving our clients a distinct competitive advantage through lower procurement costs, superior raw material quality control, and flexible customization of media density and efficiency grades.
We specialize in supplying high-quality washable synthetic fiber panel filter wholesale orders, engineered for durability, reusability, and long-term cost efficiency in demanding commercial and industrial environments. Whether you require a dedicated custom size flat panel air filter supplier to fit non-standard legacy equipment or bulk metal frame flat pre air filter inventory for large-scale engineering infrastructure projects, our factory handles full-container shipments with rigorous multi-stage quality control. Partnering directly with a media-manufacturing source factory ensures maximum profit margins for your supply chain, stable product consistency, and fast engineering turnaround.
Frequently Asked Questions For Flat Panel Air Filter
Q1: What is a flat panel air filter and what efficiency grades does it cover?
A flat panel air filter is a primary-stage pre-filtration unit designed with a rigid frame and flat media configuration to capture large airborne particulates (≥5μm). It primarily covers G2, G3, and G4 efficiency panel filter grades (corresponding to MERV 4 to MERV 8 under ASHRAE standard 52.2), making it an indispensable first line of defense in commercial and industrial air handling systems.
Q2: What frame materials are available for heavy-duty commercial applications?
We offer various structural options, with the metal frame flat pre air filter being the most popular for demanding industrial environments. Frames are manufactured using extruded aluminum alloy, galvanized steel, or stainless steel to ensure high structural stability, corrosion resistance, and zero air-bypass under high-velocity airflow conditions.
Q3: Can these pre-filters be washed and reused to reduce maintenance costs?
Yes. Our washable synthetic fiber panel filter models feature durable, moisture-resistant non-woven polyester media paired with double-sided wire reinforcement. They can be washed or blow-cleaned with compressed air multiple times without losing structural integrity, significantly lowering consumable maintenance expenditures for facility managers.
Q4: How does a flat panel pre-filter protect downstream secondary and HEPA filters?
By intercepting up to 90% of coarse dust, lint, and rust particles at the intake stage, a primary flat panel filter prevents heavy particulate loading on high-efficiency secondary V-bank or final HEPA filters. This low-resistance design (initial static pressure as low as 25Pa–35Pa) maintains steady airflow while extending the lifespan of expensive downstream micro-filtration units by 2 to 3 times.
Q5: Do you supply custom size flat panel air filters for non-standard AHU equipment?
As a direct source manufacturer, we produce custom size flat panel air filters tailored to exact height, width, and depth specifications (including standard frame thicknesses of 21mm, 25mm, and 46mm). We can also customize media weight, frame materials, and face grids to fit legacy air handling unit (AHU) tracks and OEM equipment requirements.



