Industrial pre-filters, carbon composites, and medical-grade custom HEPA options for comprehensive air intake systems.
In commercial HVAC architectures and industrial cleanrooms, the **furnace prefilter** serves as the critical first line of defense. By capturing coarse particulate matter (PM10 and above) such as dust, fibers, lint, and pollen, prefilters prevent premature loading of high-efficiency downstream secondary filters (such as bag or HEPA filters).
Under EN779:2012 and ISO 16890 standards, these primary barriers are classified as G3 (Coarse 50%+) or G4 (Coarse 60%+). Opting for the correct media structure—whether it be progressive synthetic polyester, cardboard-cased pleated panels, or heavy-duty washable metallic meshes—is paramount. High dust-holding capacity (DHC) paired with low initial pressure drop directly dictates the life-cycle cost (LCC) and operational efficiency of the entire airflow mechanism.
Shenzhen Snow Peak Clean Technology Co., Ltd. is an integrated high-tech enterprise specializing in air filtration products research, development, production, and global trade. We supply a full range of high-performance air purification systems, including Pre-filters, Pocket filters, HEPA filters, Chemical filters, and custom replacement media for residential, commercial, automotive, and cleanroom applications.
Our patented sterilizing antiviral HEPA filter technology reduces PM2.5 concentrations to under 10 micrograms/m³—exceeding national standard benchmarks fivefold. Our composite media inhibits microbial growth, achieving a sterilization rate of 99.9% and an H1N1 virus removal rate of 99.99% without secondary emissions.
Supported by a 15-year history in air purification technology, our facilities feature modern production lines, dust-free workshops, advanced AMADA CNC punching, and automated bending systems. This hardware configuration ensures that every product, from pocket filter rolls to gel-seal HEPA systems, meets strict international performance requirements.
Take an inside look at our advanced manufacturing lines, featuring high-precision pleating, cutting, and gluing automation.
How downstream cost structures, specialized supply chains, and rapid tooling design cycles benefit global distributors.
From local polymer extrusion and wire mesh weaving to advanced synthetic cardboards and polyurethane adhesive sourcing, our close proximity to raw material hubs reduces lead times and logistics costs.
Whether you require standard 1-inch, 2-inch, or 4-inch deep pleated pre-filters, or specialized circular and polygonal frames for proprietary equipment, our AMADA CNC tooling ensures rapid prototype runs within days.
Multiple high-speed pleating lines and automated frame gluing assemblies allow us to scale operations efficiently. We can support regular high-volume shipping containers for international supply networks without compromising quality.
The global air filtration industry is transitioning toward materials with lower air resistance and longer service lifespans. Standard mechanical filtration is increasingly combined with electrostatically charged synthetic fibers. This allows G4 and M5 pre-filters to capture sub-micron particles effectively while keeping initial resistance below 45 Pa.
Additionally, environmental regulations driving carbon neutrality require the use of recyclable or biodegradable materials. Our range of moisture-resistant cardboard pre-filters is designed to replace traditional plastic frames. This shift allows commercial buildings to reduce their plastic waste while maintaining high structural integrity under humid operating conditions.
Moreover, modern smart buildings utilize pressure differential sensors to monitor filter loading in real time. Our G3/G4 pleated filters feature optimized pocket geometries that distribute dust load evenly, preventing premature pressure spikes and extending the service life of downline HEPA systems.
| Filter Grade | Efficiency (ISO 16890 / EN779) | Initial Resistance | Recommended Final Resistance | Primary Applications |
|---|---|---|---|---|
| G3 / Coarse 50% | Amorphous Dust >50% | 30 - 45 Pa | 250 Pa | Heavy industrial intake, basic HVAC systems |
| G4 / Coarse 60% | Amorphous Dust >60% | 40 - 55 Pa | 250 Pa | Commercial building ventilation, AHU prefiltration |
| M5 / ePM10 50% | Fine Particles >50% | 50 - 70 Pa | 300 Pa | Cleanroom air handling units, food processing pre-stages |
| F7 / ePM2.5 70% | Fine Particles >70% | 80 - 110 Pa | 450 Pa | Secondary protection for medical facilities, computer rooms |
Engineered air filtration systems custom-tailored for demanding industrial and commercial environments.
In microelectronics production, even minor particulate contamination can impact product yields. Our customized liquid gel-seal HEPA filters, paired with high-capacity G4 pre-filters, establish a reliable multi-stage air purification system. The primary stage captures larger particulates, allowing the gel-seal HEPA units to operate at peak efficiency for long periods without bypass leakage.
Large-scale office buildings, shopping centers, and schools rely on high-volume AHUs to manage indoor air quality. Implementing our G3 or G4 pleated panel filters reduces system maintenance costs by protecting expensive heating and cooling coils from dust buildup. This maintenance routine helps sustain thermal transfer efficiency and lower overall utility costs.
Auto body spray booths require uniform laminarity and zero particulate overspray. Custom 600G ceiling diffusion media and synthetic G4 bag pre-filters remove fibers and heavy dust, protecting paint finishes.
For consumer goods like vacuum cleaners and room air purifiers, we provide custom composite carbon-HEPA filters that fit compactly inside appliances to manage both particulate and gaseous contaminants.
For locations with high concentrations of organic pollutants, our aluminum honeycomb photocatalyst filters and active carbon media layers absorb gaseous pollutants, ozone, and toxic VOCs efficiently.
Managing an international supply chain requires clear technical documentation and consistent quality control. At Shenzhen Snow Peak, we provide complete transparency from the initial compound formulation to final batch testing. Every order is accompanied by a Quality Inspection Report detailing efficiency percentages and pressure drop curves.
We offer versatile delivery arrangements, including FOB, CIF, DDP, and DAP, accommodating diverse logistics setups. Our close proximity to the ports of Shenzhen and Hong Kong enables fast customs processing and regular ocean departures to key hubs across North America, Europe, and Asia-Pacific.
Whether you are an established HVAC brand requiring contract packaging or a cleanroom installer sourcing bulk pre-filtration media rolls, our team can customize solutions to match your technical specifications.
Detailed answers to help you select, specify, and install primary furnace and HVAC pre-filters.
From pocket roll media to specialized deep-pleat HEPA filters and carbon composites.
Connect with our engineering support team to discuss parameter configurations, custom dimensions, bulk pricing structures, and sample evaluation schedules.
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Snow Peak