Specifications

Specification	Value
Model	CF-4000
Airflow	CFM: 2,060 – 2,350 \| CMH: 3,500 – 4,000 \| L/s: 980 – 1,111
Cabinet Dimensions	L 640 mm × W 620 mm × H 690 mm (legs: +100 mm)
Flange Size	W 485 mm × H 530 mm
Cabinet Material	Carbon Steel, 1.2 mm / 18 Gauge
Number of Carbon Trays	4
Tray Dimensions (each)	L 510 mm × W 535 mm × H 30 mm
Carbon Media Weight	13 – 14 kg
Pellet Diameter	4 mm
Iodine Value	550 mg/g
Filling Density	630 – 650 g/L
Hardness	> 93%
Ash Content	< 13%
Moisture Content	< 10%
Apparent Density	Approx. 0.49 g/cm³
Wind Resistance	200 Pa
Carbon Service Life	3 – 5 months
Gross Weight	55 kg

Features

Four carbon trays at 13 – 14 kg total media weight provide adsorption capacity calibrated to the organic load carried by 3,500 – 4,000 CMH of single-hood commercial kitchen exhaust
Iodine value of 550 mg/g confirms the activated carbon’s adsorption capacity for grease-laden aromatic compounds produced by wok, grill, and charcoal cooking methods
Pellet hardness above 93% and ash content below 13% ensure the 4 mm pellets do not fragment into dust within the tray during normal operation, preventing media bypass through gaps in broken carbon beds
200 Pa wind resistance matches the static pressure budget of low-static exhaust fan selections common in single-station kitchen configurations, requiring no fan motor upsize when adding carbon filtration
Compact 640 × 620 mm cabinet footprint with 100 mm service legs fits within the duct plenum above a single cooking station without structural roof reinforcement beyond standard framing
At 55 kg gross weight, this unit can be lifted into final position by two people without mechanical handling equipment, simplifying installation in spaces with restricted crane or forklift access
Carbon service life of 3 – 5 months scales with cooking intensity: single-shift light operations approach five months while two-shift high-load kitchens typically reach the replacement threshold at three months

The CF-4000 Activated Carbon Filter processes 3,500 – 4,000 CMH (2,060 – 2,350 CFM) through four carbon trays containing 13 – 14 kg of 4 mm activated carbon pellets, removing cooking odours and volatile organic compounds from single-hood commercial kitchen exhausts where the exhaust fan capacity sits at or below 4,000 CMH. At 55 kg gross weight and a 640 × 620 mm footprint, it is the only model in the CF series compact and light enough to be installed without forklift or crane assistance, making it the practical choice for retrofit projects in buildings with restricted rooftop access.

The carbon media specification directly reflects the odour load typical of a single commercial cooking station: an iodine value of 550 mg/g at 630 – 650 g/L filling density provides the adsorption surface area required to capture grease-laden aromatic molecules at the face velocity produced by 3,500 – 4,000 CMH across the four 510 × 535 mm trays. The 200 Pa wind resistance this unit adds to the exhaust system static pressure is within the reserve capacity of most inline exhaust fans selected for single-hood applications, meaning the existing fan motor can remain unchanged when carbon filtration is added to an operating kitchen.

When the kitchen exhaust volume exceeds 4,000 CMH or when a second cooking station is added to the served space, the CF-8000 at 7,000 – 8,000 CMH doubles the tray count and carbon mass to match the increased organic load — the CF-4000 would reach its service interval roughly twice as fast if used to filter an airstream twice its rated capacity. For installations that also require particulate removal alongside odour control, this unit pairs with a compatible ecology unit rated for the same 3,500 – 4,000 CMH flow range.