Carbon filters
Activated carbon filtration for odours, fumes and gases.
From carbon impregnated panels and bags for low-level supply air odours, to bonded carbon panels, Discarbs and carbon rigid filters for heavy odour and gas loads on supply or extract.

Typical use
Odour and gas removal
Five types
panel, bag, cell and rigid
50% – 65% CTC
carbon filter class
Up to 67kg
carbon per Discarb
Supply or extract
purify or remove
The range
Five carbon filters, each with a full specification
Choose a type to see its carbon, filter class, frame, depths and standard sizes.
G4Carbon impregnated pleated panel filters
Low-level supply air odours
- ISO 16890
- ISO Coarse 85%
- Frame
- Card case or galvanised steel
G4Carbon impregnated bag filters
Odour reduction in bag housings
- ISO 16890
- ISO Coarse 60%
- Frame
- Metal, 20mm or 25mm
50% CTCCarbon panel filters
General odour and fume removal
- Carbon
- Bonded or loose fill
- Depths
- 12mm – 150mm
50% CTCDiscarb filters
Heavy odour and gas loads
- Carbon
- 18kg – 67kg
- Depths
- 197mm – 597mm
M6Carbon rigid filters
Combined particle and odour control
- ISO 16890
- ePM10 65%
- Filter class
- 65% CTC
Compare carbon filters
| Specification | Carbon impregnated pleated panel | Carbon impregnated bag | Carbon panel | Discarb | Carbon rigid |
|---|---|---|---|---|---|
| Particulate grade | G4 (ISO Coarse 85%) | G4 (ISO Coarse 60%) | Pre-filter required | Pre-filter required | M6 (ISO ePM10 65%) |
| Carbon | Powdered activated carbon coating | Powdered activated carbon coating | Bonded or loose fill activated carbon | Bonded or loose fill, 18kg – 67kg | Carbon synthetic minipleat |
| Filter class | Low-level odour | Low-level odour | 50% CTC | 50% CTC | 65% CTC |
| Frame | Card case (galvanised steel option) | Metal, 20mm or 25mm | Galvanised steel | Sealed case, no bypass | ABS moulded plastic |
| Depths | 22mm, 47mm or 96mm | To suit housing | 12mm, 20mm, 45mm, 95mm or 150mm | 197mm, 292mm, 397mm, 440mm or 597mm | 292mm |
| Best for | Low-level supply air odours | Odour reduction in bag housings | General odour and fume removal | Heavy odour and gas loads | Combined particle and odour control |
Specification options
The information needed for an accurate quote
| Variable | Typical information to confirm |
|---|---|
| Odour or gas | What you need to remove, and where it comes from |
| Supply or extract | Where the filter sits in the system |
| Face dimensions | Height × width of the housing |
| Depth | Available depth in the housing |
| Air volume | Airflow, to size the carbon loading |
| Pre-filtration | The particulate filter upstream |
| Quantity and site | Demand, delivery point and change plan |
Common applications
Where carbon filters are used
- Kitchens and canteens
- Supply air near roads
- Car parks
- Airports
- Hospitals
- Laboratories
- Museums
- Paint shops
- Process extract
- Petrol stations
Not sure what is fitted?
Start with what you can see
The label, dimensions and a photo of what is fitted now are a useful starting point. For larger or mixed estates, a free site survey can create a clearer asset record.
Questions
Useful answers before you specify
For low, non-critical odours such as supply air from busy roads or car parks, carbon impregnated panels or bags are usually enough. For cooking odours, exhaust fumes or process gases, use bonded carbon panels or carbon rigid filters. For heavy loads such as hydrogen sulphide or ammonia, Discarbs hold 18kg to 67kg of carbon.
Technical help without the hard sell
Tell us the odour and the housing
Send the face size, depth, frame and quantity, plus the odour or gas you need to remove, and Maxi will confirm the right carbon filter and loading.
