Roof ventilators used for extracting air from rooms. Engine and impeller secured with a net protecting against external elements that may mechanically destroy the rotor. Not intended for use with contaminated air, aggressive or explosive gases.
Impeller: with backward curved blades in galvanized steel
Motor: with moving stator, with built-in thermal protection or lead-out contacts from windings and maintenance-free bearings.
Housing: galvanized steel.
| Type | Sizes [mm] | |||
| □ A | □ B | □ C | H | |
| VSV 250-2 L1 | 406 | 326 | 335 | 253 |
| VSV 250-25 L1 | 420 | 319 | 335 | 298 |
| VSV 311 | 560 | 470 | 435 | 330 |
| VSV 355 | 720 | 618 | 595 | 400 |
| VSV 400 | 720 | 618 | 595 | 435 |
| VSV 450 | 900 | 748 | 665 | 475 |
| VSV 500 | 900 | 748 | 665 | 495 |
| VSV 560 | 1150 | 1010 | 939 | 590 |
| VSV 630 | 1150 | 1010 | 944 | 626 |
| VSV 710 | 1350 | 1176 | 1035 | 717 |