Custom Aluminum Frame Box Air Filter with Activated Carbon Felt
Our custom carbon hvac filter features a rugged aluminum frame, folded gray-black activated carbon cotton for odor and VOC removal),a black sponge seal to stop unfiltered air leaks,and plastic dividers for structural strength.Fully customizable to fit your HVAC,air purifier,or industrial equipment,this filter is a must-have for offices,factories,restaurants,and more-keeping your air fresh and your space healthy.
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Basic Information
| Brand Name | Huazhijie | Product Name | Carbon HVAC Filter |
| Frame Material |
Aluminum Frame/Custom Frame |
Filter Media | Folded Gray-Black Activated Carbon Cotton |
| Seal & Dividers | Black Sponge Seal + Plastic Dividers | Dimensions | Custom |
| Efficiency | Chemical Adsorption / G4 | Initial Air Resistance | ≤80Pa at 300m³/h |
| Operating Temperature | -20°C to 80°C | Maximum Humidity | 80% RH |
| OEM | Yes | Certifications | ISO 9001 |
Why This Filter Stands Out
Aluminum Frame: Lightweight yet durable, corrosion-resistant
Black Sponge Sealing: Ensures zero air bypass, perfect sealing
Plastic Separators: Maintains fold integrity, prevents media collapse
Folded Activated Carbon Felt: High adsorption capacity for VOCs and odors
Custom Dimensions: Tailored to fit your specific system
Perfect for These Workshops
Commercial Buildings (Offices, Hotels): Eliminates formaldehyde from new furniture, cooking odors in hotel kitchens, and musty smells in lobbies.
Industrial Facilities (Factories, Warehouses): Traps chemical fumes, machine dust, and industrial odors to keep air safe for workers.
Restaurants & Food Service: Neutralizes cooking smells, grease fumes, and food odors-no more lingering scents in dining areas.
Why choose us?
✅10+ Years of Manufacturing Experience: Specialized in air filtration, with ISO9001 and other patent certifications.(About us)
✅ Factory Prices: Direct sales eliminate middleman markup-save up to 20% vs. distributors.
✅ Fast Customization: Tailored filters ready in 15-20 days; standard models ship within 7 days.
✅ Global Support:Our professional team provides 24-hour consulting and usually responds within 4 hours. We can also assist remotely with filter installation, debugging, and maintenance.(Contact Us)
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Frequently Asked Questions (FAQ)
Q: Why is carbon felt better than loose granules?
Think of carbon felt as a solid, woven net versus a bag of loose beads. The felt structure provides a much more consistent and open path for air to flow through, which means less work for your fan. It also holds more dust over its lifetime and won't break down into a fine black powder ("carbon dusting") that can contaminate your system.
Q: How does the black sponge gasket make a difference?
That sponge is the guardian of your filter's seal. When you install the filter, it compresses to fill every tiny gap between the frame and your unit. This creates a perfect, airtight lock that forces all the air to go through the filtration media, not around it. Without it, even the best filter can leak.
Q: What do the plastic separators inside actually do?
They act like tiny pillars that keep the carbon felt layers perfectly spaced. This prevents the material from getting squashed together, which would restrict airflow and reduce efficiency. They ensure every fold gets the air it needs and that the filter stays structurally sound.
