| SPECIFICATIONS | 500mm ROOFVENT | 610mm ROOFVENT |
| Tested Air Removing capacity 15km/h wind 25km/h wind speed |
4495 m^3/h 5757 m^3/h |
6512 m^3/h 6807 m^3/h |
| Sealed Bearings in Housing | 2 | 2 |
| No. of Blades | 32 | 42 |
| Dome Height | 365 mm | 455 mm |
| Dome Width | 650 mm | 760 mm |
| Approximate Mass: Aluminium Roofvent |
3 Kg | 4 Kg |