Negative Pressure Fan (Metal)
| Model No | ECS - 1000 (M) | ECS - 1220 (M) | ||
| Motor Type | Belt | Belt | Belt | Belt |
| Voltage (V) | 240 | 380 | 240 | 380 |
| Frequency (Hz) | 50 | 50 | 50 | 50 |
| Input Power (W) | 750 | 750 | 750 | 750 |
| Current (A) | 4.5 | 2.5 | 6.4 | 3.7 |
| Weight (kg) | 34 | 34 | 43 | 43 |
| Blade Diameter (mm/(in)) | 900/(35) | 900/(35) | 1100/(43) | 1100/(43) |
| Rotational Speed (rpm/m) | 610 | 610 | 460 | 460 |
| Air Flow (m3/h) | 27000 | 27000 | 39000 | 39000 |
| Noise (dB(A)) | <70 | <70 | <70 | <70 |
| Dimension (L*W*D (mm)) | 1000*1000*400 | 1000*1000*400 | 1220*1220*400 | 1220*1220*400 |
