CNF/D Marine electric heating unit is composed of electric heater, fan, thermostat and control box:
| Type | CNF/D-2(I) | CNF/D-3(I) | CNF/D-4(I) | CNF/D-5(I) | CNF/D-6(I) |
| Electric heating capacity KW | 2 | 3 | 4 | 5 | 6 |
| Air flow m3/h | 300 | 400 | 600 | 700 | 800 |
| External pressure Pa | 5～10 | 5～10 | 5～10 | 5～10 | 5～10 |
| Fan motor power KW | 0.03 | 0.04 | 0.05 | 0.06 | 0.07 |
| Noise dB(A) | 48 | 49 | 50 | 51 | 55 |
| Weight Kg | 40 | 42 | 43 | 45 | 50 |
| Power supply | AC380V/440V 3P 50/60Hz AC220V/230V 1P 50/60Hz | ||||
| Type | CNF/D-2(II) | CNF/D-3(II) | CNF/D-4(II) | CNF/D-5(II) | CNF/D-6(II) |
| Electric heating capacity KW | 2 | 3 | 4 | 5 | 6 |
| Air flow m3/h | 600 | 700 | 800 | 900 | 1000 |
| External pressure Pa | 100～150 | 100～150 | 100～150 | 100～150 | 100～150 |
| Fan motor power KW | 0.18 | 0.18 | 0.25 | 0.25 | 0.32 |
| Noise dB(A) | 48 | 49 | 50 | 51 | 55 |
| Weight Kg | 40 | 42 | 43 | 45 | 50 |